{"id":12034,"date":"2025-08-18T06:16:34","date_gmt":"2025-08-18T05:16:34","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=12034"},"modified":"2026-02-14T07:10:14","modified_gmt":"2026-02-14T07:10:14","slug":"universe-solar-system-top-100-mcqs-with-answer-and-explanation","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2025\/08\/18\/universe-solar-system-top-100-mcqs-with-answer-and-explanation\/","title":{"rendered":"Universe &#038; Solar System Top 100 MCQs With Answer and Explanation"},"content":{"rendered":"\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">1. The Milky Way galaxy is also known as ____________.<\/mark><\/strong><br>A) Andromeda<br>B) Akash Ganga<br>C) Sombrero Galaxy<br>D) Whirlpool Galaxy<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  In India, the Milky Way is called Akash Ganga because it resembles a flowing river in the sky.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">2. Which is the nearest galaxy to the Milky Way?<\/mark><\/strong><br>A) Andromeda<br>B) Magellanic Clouds<br>C) Triangulum<br>D) Whirlpool<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  The Andromeda Galaxy (M31) is the nearest major galaxy to the Milky Way, about 2.5 million light-years away.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">3. The Sun belongs to which type of stars?<\/mark><\/strong><br>A) Neutron star<br>B) White dwarf<br>C) Yellow dwarf (Main-sequence star)<br>D) Red giant<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  The Sun is a medium-sized G-type main-sequence star.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">4. The average distance between the Earth and the Sun is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Light year<br>B) Astronomical Unit (AU)<br>C) Parsec<br>D) Solar constant<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   1 AU = ~149.6 million km is the mean distance from Earth to Sun.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">5. The Sun\u2019s energy is produced by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Nuclear fission<br>B) Nuclear fusion<br>C) Chemical reaction<br>D) Gravitational force<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Sun\u2019s energy comes from fusion of hydrogen into helium in its core.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">6. The brightest star in the night sky is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Vega<br>B) Polaris<br>C) Sirius<br>D) Betelgeuse<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C <\/b><BR>\n<b>Explanation:<\/b>  Sirius (Dog Star) in Canis Major is the brightest star.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">7. Which planet is known as the \u2018Red Planet\u2019?<\/mark><\/strong><br>A) Venus<br>B) Jupiter<br>C) Mars<br>D) Mercury<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Mars appears red due to iron oxide (rust) on its surface.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">8. The largest planet in our solar system is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Saturn<br>B) Jupiter<br>C) Neptune<br>D) Uranus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Jupiter is the largest, with a diameter of ~142,984 km.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">9. The smallest planet in our solar system is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Pluto<br>B) Mercury<br>C) Mars<br>D) Venus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Mercury is the smallest planet, after Pluto was reclassified as a dwarf planet.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">10. Which planet is known as Earth\u2019s twin?<\/mark><\/strong><br>A) Mars<br>B) Venus<br>C) Neptune<br>D) Uranus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Venus is called Earth\u2019s twin because of similar size and mass.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">11. Which planet is called the \u2018Morning Star\u2019 or \u2018Evening Star\u2019?<\/mark><\/strong><br>A) Venus<br>B) Mars<br>C) Mercury<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   Venus shines brightly and is visible near sunrise\/sunset.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">12. The asteroid belt lies between which two planets?<\/mark><\/strong><br>A) Earth &amp; Mars<br>B) Mars &amp; Jupiter<br>C) Jupiter &amp; Saturn<br>D) Saturn &amp; Uranus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Asteroid Belt separates inner and outer planets.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">13. Which planet has the most moons?<\/mark><\/strong><br>A) Earth<br>B) Saturn<br>C) Jupiter<br>D) Neptune<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Saturn (145 moons, as of 2025) has the most known natural satellites.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">14. The largest moon of the Solar System is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Titan<br>B) Ganymede<br>C) Europa<br>D) Triton<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Ganymede (moon of Jupiter) is the largest moon.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">15. Which planet has a day longer than its year?<\/mark><\/strong><br>A) Mercury<br>B) Venus<br>C) Mars<br>D) Neptune<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Venus rotates very slowly\u20141 day = 243 Earth days, longer than its year (225 Earth days).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">16. Which is the windiest planet in the Solar System?<\/mark><\/strong><br>A) Neptune<br>B) Jupiter<br>C) Saturn<br>D) Uranus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Neptune has winds blowing at 2,100 km\/h, the fastest in the solar system.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">17. Which is the densest planet in the Solar System?<\/mark><\/strong><br>A) Earth<br>B) Mercury<br>C) Saturn<br>D) Venus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Earth has the highest density (~5.52 g\/cm\u00b3) among planets.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">18. The only planet known to support life is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Earth<br>B) Venus<br>C) Mars<br>D) Europa<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Earth has liquid water, oxygen, and favorable atmosphere for life.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">19. Which planet has a prominent ring system?<\/mark><\/strong><br>A) Jupiter<br>B) Saturn<br>C) Neptune<br>D) Uranus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Saturn\u2019s rings are the most extensive and visible.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">20. The planet with the highest surface temperature is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Mercury<br>B) Venus<br>C) Mars<br>D) Jupiter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Due to the greenhouse effect, Venus is hotter than Mercury.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">21. The first artificial satellite launched by humans was<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Explorer 1<br>B) Sputnik 1<br>C) Aryabhata<br>D) Voyager 1<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  USSR launched Sputnik 1 in 1957, the first artificial satellite.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">22. The first Indian satellite was<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) INSAT-1A<br>B) Bhaskara<br>C) Aryabhata<br>D) Rohini<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  India\u2019s first satellite Aryabhata was launched in 1975.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">23. Which planet rotates on its side (tilted axis ~98\u00b0)?<\/mark><\/strong><br>A) Neptune<br>B) Uranus<br>C) Saturn<br>D) Mars<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Uranus rotates sideways, giving it extreme seasons.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">24. The largest volcano in the Solar System is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Mauna Kea (Earth)<br>B) Mount Everest (Earth)<br>C) Olympus Mons (Mars)<br>D) Rheasilvia (Vesta)<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Olympus Mons is the largest volcano, 3 times taller than Everest.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">25. A light year is a unit of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Time<br>B) Distance<br>C) Speed<br>D) Energy<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   A light year is the distance light travels in one year (~9.46 trillion km).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">26. The planet known as the \u2018Blue Planet\u2019 is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Neptune<br>B) Earth<br>C) Uranus<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Earth is called the Blue Planet due to the presence of abundant water bodies.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">27. Which planet has the shortest day (fastest rotation)?<\/mark><\/strong><br>A) Earth<br>B) Jupiter<br>C) Saturn<br>D) Neptune<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Jupiter rotates in just 9 hours 56 minutes, the shortest day of any planet.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">28. Which is the hottest planet in the solar system?<\/mark><\/strong><br>A) Mercury<br>B) Venus<br>C) Mars<br>D) Neptune<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Venus has a thick CO\u2082 atmosphere causing extreme greenhouse effect, making it the hottest.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">29. Which planet has the Great Red Spot?<\/mark><\/strong><br>A) Jupiter<br>B) Saturn<br>C) Neptune<br>D) Mars<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   The Great Red Spot is a giant storm on Jupiter that has lasted for centuries.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">30. Which planet is known as the \u201cIce Giant\u201d?<\/mark><\/strong><br>A) Saturn<br>B) Uranus<br>C) Jupiter<br>D) Mercury<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Uranus is called an Ice Giant because it contains water, ammonia, and methane ices.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">31. Which is the second smallest planet in the solar system?<\/mark><\/strong><br>A) Mars<br>B) Venus<br>C) Mercury<br>D) Pluto<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   Mars is the second smallest planet after Mercury.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">32. Which planet has the highest number of active volcanoes?<\/mark><\/strong><br>A) Earth<br>B) Venus<br>C) Mars<br>D) Io (moon of Jupiter)<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Venus has thousands of volcanoes, with many still active.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">33. The brightest planet as seen from Earth is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Venus<br>B) Jupiter<br>C) Mars<br>D) Mercury<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Venus reflects most sunlight due to its thick clouds, making it the brightest.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">34. Which planet has methane clouds giving it a bluish color?<\/mark><\/strong><br>A) Uranus and Neptune<br>B) Jupiter and Saturn<br>C) Mars and Venus<br>D) Earth and Mercury<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Methane in their atmospheres absorbs red light and reflects blue light.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">35. Which is the coldest planet in the Solar System?<\/mark><\/strong><br>A) Neptune<br>B) Uranus<br>C) Saturn<br>D) Pluto<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Uranus has the lowest average temperature (\u2212224\u00b0C).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">36. Which star is known as the Pole Star?<\/mark><\/strong><br>A) Vega<br>B) Polaris<br>C) Sirius<br>D) Betelgeuse<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Polaris (Pole Star) lies almost directly above Earth\u2019s North Pole, used in navigation.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">37. Which galaxy is the Milky Way expected to collide with in the future?<\/mark><\/strong><br>A) Andromeda<br>B) Triangulum<br>C) Whirlpool<br>D) Sombrero<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  The Milky Way and Andromeda galaxies are predicted to collide in about 4\u20135 billion years.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">38. Which dwarf planet was once considered the ninth planet?<\/mark><\/strong><br>A) Eris<br>B) Haumea<br>C) Ceres<br>D) Pluto<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: D  <\/b><BR>\n<b>Explanation:<\/b>  Pluto was reclassified as a dwarf planet in 2006 by the IAU.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">39. Which celestial body is known as the \u201cMorning Star\u201d in Indian tradition?<\/mark><\/strong><br>A) Mercury<br>B) Venus<br>C) Jupiter<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Venus is called Shukra (Morning Star) in Indian tradition.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">40. Which planet has hexagonal-shaped storms at its pole?<\/mark><\/strong><br>A) Jupiter<br>B) Saturn<br>C) Neptune<br>D) Uranus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Saturn\u2019s north pole has a hexagon-shaped storm system observed by Voyager and Cassini.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">41. Which planet is called the \u201cMessenger of the Gods\u201d?<\/mark><\/strong><br>A) Mercury<br>B) Venus<br>C) Mars<br>D) Jupiter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   Named after Roman god Mercury, the swift messenger, due to its fast orbit.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">42. Which planet takes the longest time to orbit the Sun?<\/mark><\/strong><br>A) Neptune<br>B) Uranus<br>C) Pluto<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Neptune takes about 165 Earth years to complete one orbit.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">43. Which moon of Saturn has a thick atmosphere?<\/mark><\/strong><br>A) Titan<br>B) Enceladus<br>C) Rhea<br>D) Iapetus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Titan has a dense nitrogen-rich atmosphere, even thicker than Earth\u2019s.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"><strong>44. Which planet is known for its \u201cretrograde rotation\u201d?<\/strong><br><\/mark>A) Mars<br>B) Venus<br>C) Earth<br>D) Jupiter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Venus rotates backward (east to west) compared to most planets.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">45. The Oort Cloud is believed to be the source of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Asteroids<br>B) Comets<br>C) Meteors<br>D) Moons<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Oort Cloud is a distant spherical shell of icy bodies, source of long-period comets.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">46. Which comet is visible from Earth roughly every 76 years?<\/mark><\/strong><br>A) Encke\u2019s Comet<br>B) Halley\u2019s Comet<br>C) Hale\u2013Bopp<br>D) Shoemaker\u2013Levy 9<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Halley\u2019s Comet is the most famous periodic comet, last seen in 1986.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">47. Meteors are popularly called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Shooting stars<br>B) Asteroids<br>C) Comets<br>D) Satellites<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Meteors burn upon entering Earth\u2019s atmosphere, appearing as shooting stars.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">48. The \u201cKuiper Belt\u201d lies beyond which planet?<\/mark><\/strong><br>A) Neptune<br>B) Saturn<br>C) Uranus<br>D) Jupiter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  The Kuiper Belt is a region beyond Neptune filled with icy objects and dwarf planets.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">49. Which is the farthest known planet in the Solar System?<\/mark><\/strong><br>A) Uranus<br>B) Neptune<br>C) Pluto<br>D) Eris<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Neptune is the farthest official planet; beyond it are dwarf planets.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">50. The Sun completes one rotation about its axis in approximately<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) 15 days<br>B) 25 days<br>C) 30 days<br>D) 45 days<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Sun takes about 25 Earth days to rotate once on its equator (slower at poles).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">51. Which planet is known as the \u201cTwin of Earth\u201d?<\/mark><\/strong><br>A) Mars<br>B) Venus<br>C) Mercury<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Venus is called Earth\u2019s twin due to its similar size, mass, and composition.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">52. The first artificial satellite launched by humans was<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Explorer 1<br>B) Sputnik 1<br>C) Aryabhata<br>D) Luna 2<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Soviet Union launched Sputnik 1 in 1957, the first artificial satellite.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">53. Which planet has the largest number of moons?<\/mark><\/strong><br>A) Saturn<br>B) Jupiter<br>C) Uranus<br>D) Neptune<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Saturn has the highest number of confirmed moons (80+).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">54. Which planet was discovered by telescope in 1846?<\/mark><\/strong><br>A) Uranus<br>B) Neptune<br>C) Pluto<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Neptune was the first planet discovered by mathematical prediction and telescope observation.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">55. Which planet is tipped sideways with its axis tilted about 98\u00b0?<\/mark><\/strong><br>A) Neptune<br>B) Uranus<br>C) Venus<br>D) Mars<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Uranus rotates on its side due to a 98\u00b0 axial tilt.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">56. Which is the second brightest object in the night sky after the Moon?<\/mark><\/strong><br>A) Jupiter<br>B) Venus<br>C) Mars<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Venus is the second brightest object after the Moon, hence called the \u201cEvening Star\/Morning Star.\u201d\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">57. Which is the nearest galaxy to the Milky Way?<\/mark><\/strong><br>A) Andromeda<br>B) Large Magellanic Cloud<br>C) Triangulum<br>D) Sombrero<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Large Magellanic Cloud (LMC) is the closest galaxy to the Milky Way.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">58. The Sun\u2019s outermost layer is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Photosphere<br>B) Chromosphere<br>C) Corona<br>D) Convective zone<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  The corona is the Sun\u2019s outer atmosphere, visible during a solar eclipse.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">59. Which planet is called the \u201cGreen Planet\u201d?<\/mark><\/strong><br>A) Uranus<br>B) Earth<br>C) Neptune<br>D) Venus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Uranus appears greenish-blue due to methane absorption of red light.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">60. Which is the brightest star in the night sky?<\/mark><\/strong><br>A) Vega<br>B) Sirius<br>C) Betelgeuse<br>D) Proxima Centauri<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Sirius (Dog Star) in Canis Major is the brightest star visible from Earth.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">61. Which Indian satellite was the first to be launched into space?<\/mark><\/strong><br>A) Bhaskara-I<br>B) Aryabhata<br>C) INSAT-1A<br>D) Rohini<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  India launched Aryabhata in 1975, its first satellite.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">62. Which planet has the largest volcano, Olympus Mons?<\/mark><\/strong><br>A) Earth<br>B) Mars<br>C) Venus<br>D) Jupiter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Olympus Mons on Mars is the largest volcano in the solar system.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">63. The asteroid belt lies between<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Earth and Mars<br>B) Mars and Jupiter<br>C) Jupiter and Saturn<br>D) Saturn and Uranus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The asteroid belt is located between Mars and Jupiter.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">64. Which planet is known as the \u201cRinged Planet\u201d?<\/mark><\/strong><br>A) Uranus<br>B) Jupiter<br>C) Saturn<br>D) Neptune<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Saturn is famous for its prominent ring system made of ice and dust.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">65. Which planet rotates in the shortest time?<\/mark><\/strong><br>A) Earth<br>B) Jupiter<br>C) Mars<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Jupiter completes one rotation in 9 hours 56 minutes, the shortest among planets.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">66. Which is the smallest planet in the Solar System?<\/mark><\/strong><br>A) Mercury<br>B) Mars<br>C) Pluto<br>D) Venus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   Mercury is the smallest planet in size and mass after Pluto\u2019s reclassification.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">67. The Milky Way galaxy is shaped like a<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Ring<br>B) Spiral<br>C) Ellipse<br>D) Sphere<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Milky Way is a barred spiral galaxy.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">68. Which planet is known as the \u201cGod of War\u201d?<\/mark><\/strong><br>A) Mars<br>B) Jupiter<br>C) Venus<br>D) Mercury<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Mars is named after the Roman God of War because of its red color.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">69. The Hubble Space Telescope is mainly used for<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Weather forecasting<br>B) Deep space observations<br>C) Satellite communication<br>D) GPS services<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Hubble provides images and data about distant galaxies and stars.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">70. Which planet is also known as the \u201cMorning Star\u201d and \u201cEvening Star\u201d?<\/mark><\/strong><br>A) Mercury<br>B) Venus<br>C) Mars<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Venus is visible at dawn and dusk, hence called both Morning and Evening Star.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">71. Which planet has winds reaching speeds of over 2000 km\/h?<\/mark><\/strong><br>A) Jupiter<br>B) Saturn<br>C) Neptune<br>D) Uranus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Neptune has the fastest winds in the solar system (up to 2100 km\/h).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">72. Which star is the closest to Earth?<\/mark><\/strong><br>A) Sirius<br>B) Alpha Centauri<br>C) Proxima Centauri<br>D) Vega<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>   Proxima Centauri is the nearest star to the Sun, about 4.24 light years away.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">73. Which spacecraft first landed on the Moon?<\/mark><\/strong><br>A) Luna 2<br>B) Apollo 11<br>C) Surveyor 1<br>D) Chandrayaan-1<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  In 1969, Apollo 11 carried Neil Armstrong, the first human to land on the Moon.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">74. Which planet has the largest storm system called the Great Dark Spot?<\/mark><\/strong><br>A) Jupiter<br>B) Neptune<br>C) Saturn<br>D) Uranus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Neptune has a massive storm system called the Great Dark Spot, similar to Jupiter\u2019s Red Spot.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">75. The Sun is classified as a<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Red Giant<br>B) Yellow Dwarf (G-type star)<br>C) White Dwarf<br>D) Neutron Star<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Sun is a G2V main sequence star, commonly called a Yellow Dwarf.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">76. Which planet has a day longer than its year?<\/mark><\/strong><br>A) Mercury<br>B) Venus<br>C) Mars<br>D) Jupiter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Venus rotates so slowly that one day = 243 Earth days, longer than its year (225 days).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">77. Which celestial body was reclassified as a dwarf planet in 2006?<\/mark><\/strong><br>A) Ceres<br>B) Pluto<br>C) Haumea<br>D) Eris<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Pluto was reclassified by the International Astronomical Union (IAU) in 2006 as a dwarf planet.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">78. The Great Red Spot is found on which planet?<\/mark><\/strong><br>A) Mars<br>B) Jupiter<br>C) Saturn<br>D) Uranus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   The Great Red Spot is a giant storm on Jupiter, persisting for centuries.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">79. Which planet has a moon called Titan?<\/mark><\/strong><br>A) Jupiter<br>B) Saturn<br>C) Uranus<br>D) Neptune<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Titan, Saturn\u2019s largest moon, is bigger than Mercury and has a thick atmosphere.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">80. Which is the coldest planet in the Solar System?<\/mark><\/strong><br>A) Uranus<br>B) Neptune<br>C) Saturn<br>D) Mars<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Uranus has the lowest recorded atmospheric temperature (~ -224\u00b0C).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">81. Which is the largest planet in the Solar System?<\/mark><\/strong><br>A) Saturn<br>B) Jupiter<br>C) Neptune<br>D) Earth<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Jupiter is the largest planet with a diameter of 142,984 km.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">82. The distance traveled by light in one year is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Astronomical Unit<br>B) Light Year<br>C) Parsec<br>D) Cosmic Year<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   A light year is the distance light travels in one year (~9.46 trillion km).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">83. The largest satellite in the Solar System is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Titan<br>B) Ganymede<br>C) Europa<br>D) Callisto<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Jupiter\u2019s moon Ganymede is the largest satellite, bigger than Mercury.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">84. The first man to travel into space was<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Yuri Gagarin<br>B) Neil Armstrong<br>C) Alan Shepard<br>D) Rakesh Sharma<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Soviet cosmonaut Yuri Gagarin became the first human in space in 1961.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">85. Which planet is known as the \u201cWatery Planet\u201d?<\/mark><\/strong><br>A) Earth<br>B) Mars<br>C) Venus<br>D) Neptune<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   Earth is called the Watery Planet because 71% of its surface is covered by water.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">86. The Chandrayaan-1 mission was launched in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) 2006<br>B) 2008<br>C) 2010<br>D) 2013<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Chandrayaan-1 was India\u2019s first lunar mission, launched in 2008.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">87. Which planet has the fastest revolution around the Sun?<\/mark><\/strong><br>A) Mercury<br>B) Venus<br>C) Mars<br>D) Earth<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Mercury takes only 88 Earth days to complete one revolution.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">88. Which planet is known as the \u201cWindy Planet\u201d?<\/mark><\/strong><br>A) Neptune<br>B) Saturn<br>C) Uranus<br>D) Jupiter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   Neptune has the strongest winds in the solar system (up to 2100 km\/h).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">89. Which Indian astronaut went to space in 1984?<\/mark><\/strong><br>A) Kalpana Chawla<br>B) Rakesh Sharma<br>C) Sunita Williams<br>D) Vikram Sarabhai<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Rakesh Sharma was the first Indian to go into space in 1984 aboard Soyuz T-11.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">90. The Moon is believed to have formed due to<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Capture theory<br>B) Fission theory<br>C) Giant impact theory<br>D) Gravitational theory<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  The giant impact theory suggests the Moon formed after a Mars-sized body collided with Earth.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">91. Which planet is often called the \u201cEvening Star\u201d?<\/mark><\/strong><br>A) Mars<br>B) Venus<br>C) Jupiter<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Venus appears prominently in the evening sky, hence called the Evening Star.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">92. The shape of the Earth is best described as<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Perfect sphere<br>B) Ellipsoid<br>C) Oblate spheroid<br>D) Round disc<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: C  <\/b><BR>\n<b>Explanation:<\/b>  Earth is an oblate spheroid \u2013 flattened at poles and bulging at the equator.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">93. Which was the first Indian mission to Mars?<\/mark><\/strong><br>A) Mangalyaan (MOM)<br>B) Chandrayaan-1<br>C) Chandrayaan-2<br>D) INSAT-4A<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Mangalyaan (Mars Orbiter Mission) was launched in 2013, India\u2019s first mission to Mars.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">94. Which galaxy is the Milky Way\u2019s nearest major neighbor?<\/mark><\/strong><br>A) Triangulum Galaxy<br>B) Andromeda Galaxy<br>C) Sombrero Galaxy<br>D) Whirlpool Galaxy<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  Andromeda Galaxy (M31) is the nearest large spiral galaxy, about 2.5 million light years away.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">95. Which is the densest planet in the Solar System?<\/mark><\/strong><br>A) Earth<br>B) Jupiter<br>C) Saturn<br>D) Venus<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   Earth has the highest density (5.51 g\/cm\u00b3) among all planets.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">96. Which planet is also known as the \u201cMorning Star\u201d?<\/mark><\/strong><br>A) Venus<br>B) Mars<br>C) Mercury<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>  Venus is visible in the east at dawn, hence called the Morning Star.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">97. Which is the hottest planet in the Solar System?<\/mark><\/strong><br>A) Mercury<br>B) Venus<br>C) Mars<br>D) Jupiter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Due to a thick carbon dioxide atmosphere, Venus has the hottest surface temperatures (~465\u00b0C).\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">98. Which spacecraft carried the first humans to the Moon?<\/mark><\/strong><br>A) Apollo 11<br>B) Sputnik 1<br>C) Luna 2<br>D) Voyager 1<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: A  <\/b><BR>\n<b>Explanation:<\/b>   Apollo 11 carried Neil Armstrong and Buzz Aldrin to the Moon in 1969.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">99. Which planet has the slowest rotation?<\/mark><\/strong><br>A) Mercury<br>B) Venus<br>C) Neptune<br>D) Saturn<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>   Venus rotates extremely slowly \u2013 1 rotation = 243 Earth days.\n <\/p>\n<\/div>\n\n\n\n<p class=\"has-large-font-size\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">100. The center of our Solar System is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\"> ____________.<\/mark><\/strong><\/mark><\/strong><br>A) Earth<br>B) Sun<br>C) Moon<br>D) Jupiter<\/p>\n\n\n\n<button class=\"acc\">Show Answer<\/button>\n<div class=\"pnl\">\n  <p style=\"font-size: 22px;\"><b> Answer: B  <\/b><BR>\n<b>Explanation:<\/b>  The Sun is the gravitational center of the Solar System, around which all planets revolve.\n <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>1. The Milky Way galaxy is also known as ____________.A) AndromedaB) Akash GangaC) Sombrero GalaxyD) Whirlpool Galaxy Show Answer Answer: B Explanation: In India, the Milky Way is called Akash Ganga because it resembles a flowing river in the sky. 2. Which is the nearest galaxy to the Milky Way?A) AndromedaB) Magellanic CloudsC) TriangulumD) Whirlpool<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,14,4283],"tags":[7219,4029,5649,5623,7254,7297,7263,7266,7213,7212,7288,7209,7227,7244,7234,7223,7226,7232,7318,7322,7207,7204,7237,7225,7216,7301,7233,7218,7265,7243,7221,7241,7205,7203,7264,7250,7208,7293,7281,7323,7309,7279,7289,7327,7321,7308,7296,7282,7272,7304,4287,7317,7261,7299,7275,7305,7269,7291,7270,7320,7278,7285,7286,7314,7276,7283,7295,7325,7306,7271,7277,7328,7326,7319,7330,7268,7302,7290,7273,7267,7298,7280,7294,7303,7312,7315,7292,7313,7307,7300,7274,7287,7310,7329,7316,7284,7324,7311],"class_list":{"0":"post-12034","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-blog","7":"category-geography","8":"category-world-geography","9":"tag-a-light-year-is-a-unit-of","10":"tag-mcqs-adda","11":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","12":"tag-mcqs-for-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","13":"tag-meteors-are-popularly-called","14":"tag-olympus-mons","15":"tag-the-kuiper-belt-lies-beyond-which-planet","16":"tag-the-asteroid-belt-lies-between","17":"tag-the-asteroid-belt-lies-between-which-two-planets","18":"tag-the-average-distance-between-the-earth-and-the-sun-is-called","19":"tag-the-brightest-planet-as-seen-from-earth-is","20":"tag-the-brightest-star-in-the-night-sky-is","21":"tag-the-center-of-our-solar-system-is","22":"tag-the-chandrayaan-1-mission-was-launched-in","23":"tag-the-distance-traveled-by-light-in-one-year-is-called","24":"tag-the-first-artificial-satellite-launched-by-humans-was","25":"tag-the-first-indian-satellite-was","26":"tag-the-first-man-to-travel-into-space-was","27":"tag-the-great-red-spot-is-found-on-which-planet-2","28":"tag-the-hubble-space-telescope-is-mainly-used-for","29":"tag-the-largest-moon-of-the-solar-system-is","30":"tag-the-largest-planet-in-our-solar-system-is","31":"tag-the-largest-satellite-in-the-solar-system-is","32":"tag-the-largest-volcano-in-the-solar-system-is","33":"tag-the-milky-way-galaxy-is-also-known-as","34":"tag-the-milky-way-galaxy-is-shaped-like-a","35":"tag-the-moon-is-believed-to-have-formed-due-to","36":"tag-the-only-planet-known-to-support-life-is","37":"tag-the-oort-cloud-is-believed-to-be-the-source-of","38":"tag-the-planet-known-as-the-blue-planet-is","39":"tag-the-planet-with-the-highest-surface-temperature-is","40":"tag-the-shape-of-the-earth-is-best-described-as","41":"tag-the-smallest-planet-in-our-solar-system-is","42":"tag-the-sun-belongs-to-which-type-of-stars","43":"tag-the-sun-completes-one-rotation-about-its-axis-in-approximately","44":"tag-the-sun-is-classified-as-a","45":"tag-the-suns-energy-is-produced-by","46":"tag-the-suns-outermost-layer-is-called","47":"tag-which-celestial-body-is-known-as-the-morning-star-in-indian-tradition","48":"tag-which-celestial-body-was-reclassified-as-a-dwarf-planet-in-2006-2","49":"tag-which-comet-is-visible-from-earth-roughly-every-76-years-2","50":"tag-which-dwarf-planet-was-once-considered-the-ninth-planet","51":"tag-which-galaxy-is-the-milky-way-expected-to-collide-with-in-the-future","52":"tag-which-galaxy-is-the-milky-ways-nearest-major-neighbor-2","53":"tag-which-indian-astronaut-went-to-space-in-1984-2","54":"tag-which-indian-satellite-was-the-first-to-be-launched-into-space","55":"tag-which-is-the-brightest-star-in-the-night-sky","56":"tag-which-is-the-coldest-planet-in-the-solar-system","57":"tag-which-is-the-densest-planet-in-the-solar-system-2","58":"tag-which-is-the-farthest-known-planet-in-the-solar-system-2","59":"tag-which-is-the-hottest-planet-in-the-solar-system","60":"tag-which-is-the-largest-planet-in-the-solar-system-2","61":"tag-which-is-the-nearest-galaxy-to-the-milky-way-2","62":"tag-which-is-the-second-brightest-object-in-the-night-sky-after-the-moon","63":"tag-which-is-the-second-smallest-planet-in-the-solar-system","64":"tag-which-is-the-smallest-planet-in-the-solar-system","65":"tag-which-is-the-windiest-planet-in-the-solar-system-2","66":"tag-which-moon-of-saturn-has-a-thick-atmosphere-2","67":"tag-which-planet-has-a-day-longer-than-its-year-2","68":"tag-which-planet-has-a-moon-called-titan-2","69":"tag-which-planet-has-a-prominent-ring-system-2","70":"tag-which-planet-has-hexagonal-shaped-storms-at-its-pole","71":"tag-which-planet-has-methane-clouds-giving-it-a-bluish-color","72":"tag-which-planet-has-the-fastest-revolution-around-the-sun-2","73":"tag-which-planet-has-the-great-red-spot","74":"tag-which-planet-has-the-highest-number-of-active-volcanoes","75":"tag-which-planet-has-the-largest-number-of-moons-2","76":"tag-which-planet-has-the-largest-storm-system-called-the-great-dark-spot-2","77":"tag-which-planet-has-the-largest-volcano","78":"tag-which-planet-has-the-most-moons-2","79":"tag-which-planet-has-the-shortest-da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