{"id":13449,"date":"2025-10-01T07:31:04","date_gmt":"2025-10-01T06:31:04","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=13449"},"modified":"2026-02-14T07:28:00","modified_gmt":"2026-02-14T07:28:00","slug":"atmosphere-top-100-mcqs-with-answer-and-explanation","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2025\/10\/01\/atmosphere-top-100-mcqs-with-answer-and-explanation\/","title":{"rendered":"Atmosphere\u00a0Top 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 atmosphere is the envelope of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Rocks<br>B) Air<br>C) Water<br>D) Soil<br><strong>Answer:<\/strong> B) Air<br><strong>Explanation:<\/strong> Atmosphere is a mixture of gases surrounding the 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>  The Sun is the gravitational center of the Solar System, around which all planets revolve.\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 gas is most abundant in the Earth\u2019s atmosphere?<br><\/mark><\/strong>A) Oxygen<br>B) Carbon dioxide<br>C) Nitrogen<br>D) Argon<br><strong>Answer:<\/strong> C) Nitrogen<br><strong>Explanation:<\/strong> Nitrogen makes up ~78% of the atmosphere.<\/p>\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 percentage of oxygen in the atmosphere is about<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) 10%<br>B) 21%<br>C) 25%<br>D) 30%<br><strong>Answer:<\/strong> B) 21%<br><strong>Explanation:<\/strong> Oxygen is essential for respiration and combustion.<\/p>\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. Carbon dioxide forms about what percent of the atmosphere?<br><\/mark><\/strong>A) 0.03\u20130.04%<br>B) 1%<br>C) 2%<br>D) 5%<br><strong>Answer:<\/strong> A) 0.03\u20130.04%<br><strong>Explanation:<\/strong> Though small in amount, CO\u2082 is crucial for greenhouse effect.<\/p>\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>5. The atmosphere extends up to approximately<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/strong><\/mark>A) 10 km<br>B) 100 km<br>C) 500 km<br>D) 1600 km<br><strong>Answer:<\/strong> D) 1600 km<br><strong>Explanation:<\/strong> The atmosphere thins with altitude but extends ~1600 km above Earth.<\/p>\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 lowest layer of the atmosphere is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Stratosphere<br>B) Mesosphere<br>C) Troposphere<br>D) Thermosphere<br><strong>Answer:<\/strong> C) Troposphere<br><strong>Explanation:<\/strong> It extends ~0\u201312 km, contains most weather phenomena.<\/p>\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. Most weather phenomena occur in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Stratosphere<br>B) Troposphere<br>C) Mesosphere<br>D) Exosphere<br><strong>Answer:<\/strong> B) Troposphere<br><strong>Explanation:<\/strong> Clouds, winds, rainfall, storms are found here.<\/p>\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 upper boundary of the troposphere is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Mesopause<br>B) Tropopause<br>C) Stratopause<br>D) Thermopause<br><strong>Answer:<\/strong> B) Tropopause<br><strong>Explanation:<\/strong> It separates troposphere from stratosphere.<\/p>\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 layer of atmosphere where ozone is concentrated is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Troposphere<br>B) Stratosphere<br>C) Mesosphere<br>D) Thermosphere<br><strong>Answer:<\/strong> B) Stratosphere<br><strong>Explanation:<\/strong> Ozone absorbs harmful UV radiation from the sun.<\/p>\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. The protective layer of ozone lies roughly between<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) 0\u201310 km<br>B) 10\u201350 km<br>C) 50\u201380 km<br>D) 80\u2013100 km<br><strong>Answer:<\/strong> B) 10\u201350 km<br><strong>Explanation:<\/strong> The ozone layer is in the stratosphere.<\/p>\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. The coldest layer of the atmosphere is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Troposphere<br>B) Stratosphere<br>C) Mesosphere<br>D) Thermosphere<br><strong>Answer:<\/strong> C) Mesosphere<br><strong>Explanation:<\/strong> Temperatures fall to \u201390\u00b0C here.<\/p>\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 ionosphere is a part of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Troposphere<br>B) Stratosphere<br>C) Thermosphere<br>D) Mesosphere<br><strong>Answer:<\/strong> C) Thermosphere<br><strong>Explanation:<\/strong> Contains charged particles; helps in radio communication.<\/p>\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. The outermost layer of the atmosphere is:<br><\/mark><\/strong>A) Stratosphere<br>B) Exosphere<br>C) Mesosphere<br>D) Thermosphere<br><strong>Answer:<\/strong> B) Exosphere<br><strong>Explanation:<\/strong> Extends beyond 700 km; merges into space.<\/p>\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 aurora (Northern &amp; Southern lights) occur in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Troposphere<br>B) Stratosphere<br>C) Thermosphere (Ionosphere)<br>D) Mesosphere<br><strong>Answer:<\/strong> C) Thermosphere (Ionosphere)<br><strong>Explanation:<\/strong> Caused by solar wind interacting with charged particles.<\/p>\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 layer is called the \u201cweather-making layer\u201d?<br><\/mark><\/strong>A) Stratosphere<br>B) Mesosphere<br>C) Troposphere<br>D) Thermosphere<br><strong>Answer:<\/strong> C) Troposphere<br><strong>Explanation:<\/strong> It has water vapor, dust, and weather systems.<\/p>\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. Jet planes usually fly in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Troposphere<br>B) Stratosphere<br>C) Mesosphere<br>D) Thermosphere<br><strong>Answer:<\/strong> B) Stratosphere<br><strong>Explanation:<\/strong> To avoid weather turbulence and clouds.<\/p>\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. The stratosphere is ideal for flying because<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) No oxygen<br>B) No clouds, calm winds<br>C) High gravity<br>D) Less radiation<br><strong>Answer:<\/strong> B) No clouds, calm winds<br><strong>Explanation:<\/strong> Weather is stable in stratosphere.<\/p>\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 percentage of water vapor in atmosphere varies up to<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) 1%<br>B) 2%<br>C) 4%<br>D) 10%<br><strong>Answer:<\/strong> C) 4%<br><strong>Explanation:<\/strong> Varies with climate and altitude.<\/p>\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 gases are called \u201cgreenhouse gases\u201d?<br><\/mark><\/strong>A) Nitrogen, Oxygen<br>B) Carbon dioxide, Methane, Water vapor<br>C) Hydrogen, Helium<br>D) Argon, Neon<br><strong>Answer:<\/strong> B) Carbon dioxide, Methane, Water vapor<br><strong>Explanation:<\/strong> They trap heat and maintain Earth\u2019s temperature.<\/p>\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 lapse rate refers to<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Increase of temperature with height<br>B) Decrease of temperature with height<br>C) Constant temperature with height<br>D) Variation of pressure only<br><strong>Answer:<\/strong> B) Decrease of temperature with height<br><strong>Explanation:<\/strong> In troposphere, temperature drops ~6.5\u00b0C per km.<\/p>\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. Ozone depletion is mainly caused by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Nitrogen oxides<br>B) Carbon dioxide<br>C) Chlorofluorocarbons (CFCs)<br>D) Methane<br><strong>Answer:<\/strong> C) Chlorofluorocarbons (CFCs)<br><strong>Explanation:<\/strong> CFCs break down ozone molecules.<\/p>\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 ozone hole is observed mostly over<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Arctic region<br>B) Antarctic region<br>C) Equator<br>D) Himalayas<br><strong>Answer:<\/strong> B) Antarctic region<br><strong>Explanation:<\/strong> Cold stratospheric clouds over Antarctica accelerate ozone depletion.<\/p>\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. The atmosphere is held to the Earth by<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Gravity<br>B) Solar radiation<br>C) Magnetic field<br>D) Rotation of Earth<br><strong>Answer:<\/strong> A) Gravity<br><strong>Explanation:<\/strong> Gravity prevents gases from escaping into space.<\/p>\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. Air pressure decreases with<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Increase in altitude<br>B) Decrease in altitude<br>C) No change in altitude<br>D) Equator only<br><strong>Answer:<\/strong> A) Increase in altitude<br><strong>Explanation:<\/strong> Pressure is maximum at sea level and decreases upward.<\/p>\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. Which layer of the atmosphere protects Earth from meteors?<br><\/mark><\/strong>A) Stratosphere<br>B) Mesosphere<br>C) Thermosphere<br>D) Exosphere<br><strong>Answer:<\/strong> B) Mesosphere<br><strong>Explanation:<\/strong> Meteors burn up due to friction in mesosphere.<\/p>\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>26. The average temperature at sea level decreases with altitude at the rate of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><\/strong><\/mark><br>A) 3.5\u00b0C per km<br>B) 6.5\u00b0C per km<br>C) 9.8\u00b0C per km<br>D) 2\u00b0C per km<br><strong>Answer:<\/strong> B) 6.5\u00b0C per km<br><strong>Explanation:<\/strong> This is known as the <em>normal lapse rate<\/em>.<\/p>\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. The instrument used to measure temperature is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Hygrometer<br>B) Thermometer<br>C) Barometer<br>D) Anemometer<br><strong>Answer:<\/strong> B) Thermometer<br><strong>Explanation:<\/strong> Thermometer is used for air and surface temperature.<\/p>\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. The minimum temperature of the day is usually recorded<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) At midnight<br>B) Just before sunrise<br>C) At noon<br>D) Evening<br><strong>Answer:<\/strong> B) Just before sunrise<br><strong>Explanation:<\/strong> Long cooling during the night makes this the coldest time.<\/p>\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. The maximum temperature of the day is usually recorded<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) At noon<br>B) Around 2\u20133 pm<br>C) At sunset<br>D) At midnight<br><strong>Answer:<\/strong> B) Around 2\u20133 pm<br><strong>Explanation:<\/strong> There is a lag between maximum solar radiation (noon) and heating of surface.<\/p>\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. The average temperature decreases from<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Equator to poles<br>B) Poles to equator<br>C) Tropics to equator<br>D) Oceans to land<br><strong>Answer:<\/strong> A) Equator to poles<br><strong>Explanation:<\/strong> Due to decreasing solar intensity and slanting rays.<\/p>\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. The instrument used to measure solar radiation is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Pyrheliometer<br>B) Barometer<br>C) Hygrometer<br>D) Anemometer<br><strong>Answer:<\/strong> A) Pyrheliometer<br><strong>Explanation:<\/strong> It measures direct solar radiation.<\/p>\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>32. The heating of atmosphere is mainly due to<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/strong><\/mark>A) Direct sunlight<br>B) Absorption of terrestrial radiation by gases<br>C) Earth\u2019s rotation<br>D) Ocean currents<br><strong>Answer:<\/strong> B) Absorption of terrestrial radiation by gases<br><strong>Explanation:<\/strong> Earth\u2019s surface absorbs solar energy and re-emits as longwave radiation.<\/p>\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 \u201cGreenhouse Effect\u201d refers to<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Absorption of solar radiation directly by gases<br>B) Trapping of terrestrial radiation by CO\u2082, CH\u2084, water vapor<br>C) Increase in ozone layer<br>D) Cooling of atmosphere<br><strong>Answer:<\/strong> B) Trapping of terrestrial radiation by CO\u2082, CH\u2084, water vapor<br><strong>Explanation:<\/strong> Greenhouse gases maintain Earth\u2019s average temperature.<\/p>\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. The Earth\u2019s average surface temperature is about<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) 0\u00b0C<br>B) 15\u00b0C<br>C) 30\u00b0C<br>D) 45\u00b0C<br><strong>Answer:<\/strong> B) 15\u00b0C<br><strong>Explanation:<\/strong> Maintained by balance between incoming and outgoing radiation.<\/p>\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>35. The difference between maximum and minimum daily temperature is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/strong><\/mark>A) Mean temperature<br>B) Diurnal range<br>C) Annual range<br>D) Lapse rate<br><strong>Answer:<\/strong> B) Diurnal range<br><strong>Explanation:<\/strong> Indicates variation within a day.<\/p>\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. The difference between the hottest and coldest month\u2019s mean temperature is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Annual range of temperature<br>B) Daily range of temperature<br>C) Lapse rate<br>D) Heat budget<br><strong>Answer:<\/strong> A) Annual range of temperature<br><strong>Explanation:<\/strong> Shows seasonal variation.<\/p>\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 area has the least annual range of temperature?<br><\/mark><\/strong>A) Continental interiors<br>B) Coastal regions<br>C) Deserts<br>D) Mountain peaks<br><strong>Answer:<\/strong> B) Coastal regions<br><strong>Explanation:<\/strong> Oceans moderate temperature variation.<\/p>\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 area has the maximum annual range of temperature?<br><\/mark><\/strong>A) Equatorial region<br>B) Coastal region<br>C) Continental interiors (Siberia)<br>D) Tropical islands<br><strong>Answer:<\/strong> C) Continental interiors (Siberia)<br><strong>Explanation:<\/strong> Lack of oceanic influence causes extremes.<\/p>\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. The heat received by Earth from 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><br><\/mark><\/strong>A) Insolation<br>B) Reflection<br>C) Albedo<br>D) Radiation<br><strong>Answer:<\/strong> A) Insolation<br><strong>Explanation:<\/strong> Insolation = incoming solar radiation.<\/p>\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. The proportion of solar radiation reflected back is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Albedo<br>B) Insolation<br>C) Refraction<br>D) Scattering<br><strong>Answer:<\/strong> A) Albedo<br><strong>Explanation:<\/strong> Earth\u2019s average albedo = ~30%.<\/p>\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. The heat balance of Earth means<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Equal input and output of radiation<br>B) Only incoming heat<br>C) Only outgoing heat<br>D) Oceanic heat flow<br><strong>Answer:<\/strong> A) Equal input and output of radiation<br><strong>Explanation:<\/strong> Ensures average global temperature stability.<\/p>\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. Areas of low pressure are usually associated with<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Cloudy and rainy weather<br>B) Clear skies<br>C) Extreme cold<br>D) None of the above<br><strong>Answer:<\/strong> A) Cloudy and rainy weather<br><strong>Explanation:<\/strong> Rising air cools, condenses, and forms clouds.<\/p>\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. Areas of high pressure are usually associated with<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Clear skies and dry weather<br>B) Storms<br>C) Rainfall<br>D) Monsoons<br><strong>Answer:<\/strong> A) Clear skies and dry weather<br><strong>Explanation:<\/strong> Descending air suppresses cloud formation.<\/p>\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\">44. The instrument used to measure air pressure is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Thermometer<br>B) Barometer<br>C) Hygrometer<br>D) Anemometer<br><strong>Answer:<\/strong> B) Barometer<br><strong>Explanation:<\/strong> Standard unit = millibars (hPa).<\/p>\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. Standard atmospheric pressure at sea level is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) 760 mm of mercury \/ 1013 mb<br>B) 500 mm of mercury<br>C) 100 mb<br>D) 1000 mm of mercury<br><strong>Answer:<\/strong> A) 760 mm of mercury \/ 1013 mb<br><strong>Explanation:<\/strong> This is the normal sea-level pressure.<\/p>\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. Pressure decreases with altitude at the rate of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) 1 mb per 10 m<br>B) 1 mb per 50 m<br>C) 1 mb per 100 m<br>D) 1 mb per 500 m<br><strong>Answer:<\/strong> C) 1 mb per 100 m (approx.)<br><strong>Explanation:<\/strong> On average, pressure decreases by ~1 mb for every 10 m in the lower atmosphere, but generalized as ~100 mb per km.<\/p>\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. The equatorial low-pressure belt is also called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Doldrums<br>B) Horse latitudes<br>C) Polar front<br>D) Trade wind belt<br><strong>Answer:<\/strong> A) Doldrums<br><strong>Explanation:<\/strong> Near the equator, air rises due to intense heating.<\/p>\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 subtropical high-pressure belts are also called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Doldrums<br>B) Horse latitudes<br>C) Westerlies<br>D) Polar highs<br><strong>Answer:<\/strong> B) Horse latitudes<br><strong>Explanation:<\/strong> Calm regions around 30\u00b0 N and S latitude.<\/p>\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. The subpolar low-pressure belts are located around<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) 30\u00b0 latitude<br>B) 45\u00b0\u201360\u00b0 latitude<br>C) Equator<br>D) Poles<br><strong>Answer:<\/strong> B) 45\u00b0\u201360\u00b0 latitude<br><strong>Explanation:<\/strong> Caused by convergence of cold polar and warm westerly winds.<\/p>\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 polar regions are zones of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Low pressure<br>B) High pressure<br>C) Variable pressure<br>D) None of these<br><strong>Answer:<\/strong> B) High pressure<br><strong>Explanation:<\/strong> Cold dense air creates high pressure at the poles.<\/p>\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. Winds blow due to<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Earth\u2019s rotation only<br>B) Pressure differences<br>C) Solar radiation only<br>D) Ocean currents<br><strong>Answer:<\/strong> B) Pressure differences<br><strong>Explanation:<\/strong> Air moves from high-pressure to low-pressure areas.<\/p>\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 force that initiates the movement of air is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Coriolis force<br>B) Centrifugal force<br>C) Pressure gradient force<br>D) Frictional force<br><strong>Answer:<\/strong> C) Pressure gradient force<br><strong>Explanation:<\/strong> The difference in pressure causes air to flow.<\/p>\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. The apparent deflection of winds due to Earth\u2019s rotation is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Centripetal force<br>B) Coriolis force<br>C) Gradient force<br>D) Geostrophic force<br><strong>Answer:<\/strong> B) Coriolis force<br><strong>Explanation:<\/strong> In the Northern Hemisphere winds deflect to the right, in the Southern Hemisphere to the left.<\/p>\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. Coriolis force is maximum at<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Equator<br>B) Poles<br>C) Tropics<br>D) 30\u00b0 latitude<br><strong>Answer:<\/strong> B) Poles<br><strong>Explanation:<\/strong> It is zero at the equator and increases towards the poles.<\/p>\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. Winds parallel to isobars under the influence of Coriolis force are called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Geostrophic winds<br>B) Local winds<br>C) Cyclones<br>D) Trade winds<br><strong>Answer:<\/strong> A) Geostrophic winds<br><strong>Explanation:<\/strong> These balance pressure gradient and Coriolis forces.<\/p>\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. Winds spiraling into a low-pressure system are called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Cyclones<br>B) Anticyclones<br>C) Trade winds<br>D) Westerlies<br><strong>Answer:<\/strong> A) Cyclones<br><strong>Explanation:<\/strong> Cyclones have converging winds with rising air.<\/p>\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. Winds spiraling out of a high-pressure system are called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Cyclones<br>B) Anticyclones<br>C) Westerlies<br>D) Hurricanes<br><strong>Answer:<\/strong> B) Anticyclones<br><strong>Explanation:<\/strong> Anticyclones have diverging winds with descending air.<\/p>\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. Trade winds blow from<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Subtropical highs to equatorial lows<br>B) Subpolar lows to subtropical highs<br>C) Poles to equator<br>D) Equator to subtropics<br><strong>Answer:<\/strong> A) Subtropical highs to equatorial lows<br><strong>Explanation:<\/strong> They blow between 30\u00b0 and the equator, deflected by Coriolis force.<\/p>\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. In the Northern Hemisphere, trade winds blow from<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) NE to SW<br>B) NW to SE<br>C) SE to NW<br>D) SW to NE<br><strong>Answer:<\/strong> A) NE to SW<br><strong>Explanation:<\/strong> They originate from the northeast due to Coriolis effect.<\/p>\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. In the Southern Hemisphere, trade winds blow from<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) SE to NW<br>B) SW to NE<br>C) NE to SW<br>D) NW to SE<br><strong>Answer:<\/strong> A) SE to NW<br><strong>Explanation:<\/strong> Deflected to the left in the Southern Hemisphere.<\/p>\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. The belt of calm air around the equator where trade winds converge is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Horse latitudes<br>B) Doldrums<br>C) Polar front<br>D) Westerlies<br><strong>Answer:<\/strong> B) Doldrums<br><strong>Explanation:<\/strong> Characterized by low pressure and weak winds.<\/p>\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. Westerlies blow between<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) 0\u00b0 and 30\u00b0 latitude<br>B) 30\u00b0 and 60\u00b0 latitude<br>C) 60\u00b0 and 90\u00b0 latitude<br>D) Equator and poles<br><strong>Answer:<\/strong> B) 30\u00b0 and 60\u00b0 latitude<br><strong>Explanation:<\/strong> They blow from subtropical highs to subpolar lows.<\/p>\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. Polar easterlies blow from<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Poles to subpolar lows<br>B) Equator to poles<br>C) Tropics to equator<br>D) Poles to tropics<br><strong>Answer:<\/strong> A) Poles to subpolar lows<br><strong>Explanation:<\/strong> Very cold winds deflected by Coriolis force.<\/p>\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. The convergence of westerlies and polar easterlies occurs at<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Equator<br>B) Tropic of Cancer<br>C) Polar front (60\u00b0 latitude)<br>D) Poles<br><strong>Answer:<\/strong> C) Polar front (60\u00b0 latitude)<br><strong>Explanation:<\/strong> Polar front is the meeting zone of cold polar air and warm westerlies.<\/p>\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. Jet streams are high-altitude winds that blow in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Troposphere<br>B) Stratosphere<br>C) Tropopause<br>D) Exosphere<br><strong>Answer:<\/strong> C) Tropopause<br><strong>Explanation:<\/strong> Strong narrow currents in the upper troposphere\/lower stratosphere.<\/p>\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. The velocity of jet streams is highest in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Winter<br>B) Summer<br>C) Monsoon<br>D) Spring<br><strong>Answer:<\/strong> A) Winter<br><strong>Explanation:<\/strong> Temperature gradient between equator and poles is maximum in winter.<\/p>\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 subtropical jet stream is strongest at about<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) 10\u00b0 latitude<br>B) 30\u00b0 latitude<br>C) 45\u00b0 latitude<br>D) 60\u00b0 latitude<br><strong>Answer:<\/strong> B) 30\u00b0 latitude<br><strong>Explanation:<\/strong> Located near the subtropical high-pressure belt.<\/p>\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>68. The polar jet stream is located near<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/strong><\/mark>A) 30\u00b0 latitude<br>B) 60\u00b0 latitude<br>C) 90\u00b0 latitude<br>D) Equator<br><strong>Answer:<\/strong> B) 60\u00b0 latitude<br><strong>Explanation:<\/strong> Near the subpolar low-pressure belt.<\/p>\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. Monsoon winds are seasonal winds that reverse due to<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Earth\u2019s rotation<br>B) Pressure difference between land and sea<br>C) Ocean currents<br>D) Jet streams only<br><strong>Answer:<\/strong> B) Pressure difference between land and sea<br><strong>Explanation:<\/strong> Caused by differential heating of land and ocean.<\/p>\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. The Indian summer monsoon is characterized by winds blowing from<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Land to sea<br>B) Sea to land<br>C) Poles to equator<br>D) East to west<br><strong>Answer:<\/strong> B) Sea to land<br><strong>Explanation:<\/strong> Moist winds from Indian Ocean bring rainfall.<\/p>\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. Local hot dry wind of North India during summer is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Chinook<br>B) Bora<br>C) Loo<br>D) Foehn<br><strong>Answer:<\/strong> C) Loo<br><strong>Explanation:<\/strong> Hot winds blowing in May\u2013June, raising temperatures.<\/p>\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. The warm dry wind of USA and Canada that melts snow is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Bora<br>B) Foehn<br>C) Chinook<br>D) Loo<br><strong>Answer:<\/strong> C) Chinook<br><strong>Explanation:<\/strong> Known as \u201csnow-eater\u201d in the Rockies.<\/p>\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. The warm dry wind on the leeward side of the Alps is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Chinook<br>B) Bora<br>C) Foehn<br>D) Harmattan<br><strong>Answer:<\/strong> C) Foehn<br><strong>Explanation:<\/strong> Brings sudden rise in temperature in Europe.<\/p>\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. The dry, dusty wind blowing from the Sahara to West Africa is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Loo<br>B) Harmattan<br>C) Bora<br>D) Sirocco<br><strong>Answer:<\/strong> B) Harmattan<br><strong>Explanation:<\/strong> Reduces humidity, often called \u201cdoctor wind\u201d.<\/p>\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. Cyclones in the Northern Hemisphere rotate<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Clockwise<br>B) Anticlockwise<br>C) North to South<br>D) Randomly<br><strong>Answer:<\/strong> B) Anticlockwise<br><strong>Explanation:<\/strong> Due to Coriolis force, cyclones rotate anticlockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.<\/p>\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. The actual amount of water vapor present in the air is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Relative humidity<br>B) Absolute humidity<br>C) Specific humidity<br>D) Dew point<br><strong>Answer:<\/strong> B) Absolute humidity<br><strong>Explanation:<\/strong> It is measured in grams of water vapor per cubic meter of air.<\/p>\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. Relative humidity is the ratio of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Actual water vapor to maximum possible water vapor capacity<br>B) Maximum water vapor to actual water vapor<br>C) Precipitation to evaporation<br>D) Air temperature to dew point<br><strong>Answer:<\/strong> A) Actual water vapor to maximum possible water vapor capacity<br><strong>Explanation:<\/strong> Expressed as a percentage.<\/p>\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 temperature at which air becomes saturated and condensation begins is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Melting point<br>B) Boiling point<br>C) Dew point<br>D) Frost point<br><strong>Answer:<\/strong> C) Dew point<br><strong>Explanation:<\/strong> Below this temperature, condensation occurs.<\/p>\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. When dew point is below 0\u00b0C, water vapor directly changes into ice crystals. This is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Condensation<br>B) Freezing<br>C) Sublimation (Frost)<br>D) Evaporation<br><strong>Answer:<\/strong> C) Sublimation (Frost)<br><strong>Explanation:<\/strong> Water vapor converts directly into solid form.<\/p>\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. Clouds are formed due to<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Condensation of water vapor<br>B) Evaporation of oceans<br>C) Cooling of soil<br>D) Movement of air only<br><strong>Answer:<\/strong> A) Condensation of water vapor<br><strong>Explanation:<\/strong> Tiny water droplets or ice crystals form clouds.<\/p>\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 clouds are highest in the atmosphere?<br><\/mark><\/strong>A) Cirrus<br>B) Cumulus<br>C) Stratus<br>D) Nimbus<br><strong>Answer:<\/strong> A) Cirrus<br><strong>Explanation:<\/strong> Found at 6,000\u201312,000 m; thin, feathery clouds.<\/p>\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>82. Which clouds are known as \u201cfair weather clouds\u201d?<br><\/strong><\/mark>A) Cumulus<br>B) Cirrus<br>C) Stratus<br>D) Nimbus<br><strong>Answer:<\/strong> A) Cumulus<br><strong>Explanation:<\/strong> Puffy, cotton-like clouds seen on sunny days.<\/p>\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. Which clouds are rain-bearing?<br><\/mark><\/strong>A) Cirrus<br>B) Cumulus<br>C) Stratus<br>D) Nimbus<br><strong>Answer:<\/strong> D) Nimbus<br><strong>Explanation:<\/strong> \u201cNimbus\u201d means rain cloud (e.g., cumulonimbus).<\/p>\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 instrument used to measure humidity is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Hygrometer<br>B) Thermometer<br>C) Barometer<br>D) Rain gauge<br><strong>Answer:<\/strong> A) Hygrometer<br><strong>Explanation:<\/strong> It measures water vapor content in the air.<\/p>\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. The instrument used to measure rainfall is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Barometer<br>B) Rain gauge<br>C) Hygrometer<br>D) Pyrheliometer<br><strong>Answer:<\/strong> B) Rain gauge<br><strong>Explanation:<\/strong> Collects and measures precipitation.<\/p>\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 process by which water vapor changes into liquid is<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Evaporation<br>B) Condensation<br>C) Sublimation<br>D) Transpiration<br><strong>Answer:<\/strong> B) Condensation<br><strong>Explanation:<\/strong> It forms dew, fog, or clouds.<\/p>\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. Precipitation in the form of ice pellets is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Snow<br>B) Sleet<br>C) Hail<br>D) Frost<br><strong>Answer:<\/strong> B) Sleet<br><strong>Explanation:<\/strong> Frozen raindrops or refrozen ice pellets.<\/p>\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. Precipitation in the form of large ice balls is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Snow<br>B) Hail<br>C) Sleet<br>D) Graupel<br><strong>Answer:<\/strong> B) Hail<br><strong>Explanation:<\/strong> Produced by violent updrafts in cumulonimbus clouds.<\/p>\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. Orographic rainfall occurs when<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Air rises due to mountain barriers<br>B) Air heats up over deserts<br>C) Cold air meets warm air<br>D) Cyclone develops<br><strong>Answer:<\/strong> A) Air rises due to mountain barriers<br><strong>Explanation:<\/strong> Common on windward side of mountains.<\/p>\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. Convectional rainfall is common in<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Polar regions<br>B) Equatorial regions<br>C) Temperate zones<br>D) Deserts<br><strong>Answer:<\/strong> B) Equatorial regions<br><strong>Explanation:<\/strong> Caused by intense heating and vertical air currents.<\/p>\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. Cyclonic rainfall occurs due to<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Cooling of air at high altitude<br>B) Convergence of warm and cold air masses<br>C) Mountains<br>D) Ocean currents<br><strong>Answer:<\/strong> B) Convergence of warm and cold air masses<br><strong>Explanation:<\/strong> Typical of temperate and tropical cyclones.<\/p>\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. Heavy rainfall on one side of the mountain and dry conditions on the other side is called<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Rainfall effect<br>B) Desertification<br>C) Rain shadow effect<br>D) Cyclonic effect<br><strong>Answer:<\/strong> C) Rain shadow effect<br><strong>Explanation:<\/strong> The leeward side remains dry.<\/p>\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. The world\u2019s highest rainfall is recorded at<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Cherrapunji (India)<br>B) Mawsynram (India)<br>C) Columbia (South America)<br>D) Hawaii<br><strong>Answer:<\/strong> B) Mawsynram (India)<br><strong>Explanation:<\/strong> Meghalaya, India, receives ~11,872 mm annually.<\/p>\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. Desert regions receive rainfall less than<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) 50 cm<br>B) 25 cm<br>C) 75 cm<br>D) 100 cm<br><strong>Answer:<\/strong> B) 25 cm<br><strong>Explanation:<\/strong> By definition, deserts get less than 25 cm annually.<\/p>\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. K\u00f6ppen\u2019s classification of climate is based on<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Latitude<br>B) Vegetation &amp; Temperature<br>C) Rainfall &amp; Temperature<br>D) Ocean currents<br><strong>Answer:<\/strong> C) Rainfall &amp; Temperature<br><strong>Explanation:<\/strong> K\u00f6ppen classified climates using both precipitation and temperature.<\/p>\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. The letter \u201cA\u201d in K\u00f6ppen\u2019s classification stands for<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Arid<br>B) Equatorial (Tropical)<br>C) Temperate<br>D) Polar<br><strong>Answer:<\/strong> B) Equatorial (Tropical)<br><strong>Explanation:<\/strong> Hot, humid equatorial climate.<\/p>\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. The letter \u201cB\u201d in K\u00f6ppen\u2019s classification stands for<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Desert &amp; Steppe (Dry)<br>B) Tropical<br>C) Temperate<br>D) Polar<br><strong>Answer:<\/strong> A) Desert &amp; Steppe (Dry)<br><strong>Explanation:<\/strong> Low-rainfall, arid climates.<\/p>\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. The letter \u201cE\u201d in K\u00f6ppen\u2019s classification stands for<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Equatorial<br>B) Dry<br>C) Polar<br>D) Highland<br><strong>Answer:<\/strong> C) Polar<br><strong>Explanation:<\/strong> Very cold climates like tundra and ice cap.<\/p>\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. The Indian monsoon is an example of<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Planetary wind<br>B) Local wind<br>C) Seasonal reversal of winds<br>D) Polar front<br><strong>Answer:<\/strong> C) Seasonal reversal of winds<br><strong>Explanation:<\/strong> Summer monsoon blows sea to land; winter monsoon land to sea.<\/p>\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 atmosphere is important for life on Earth because it<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-luminous-vivid-orange-color\">_____________.<\/mark><\/strong><br><\/mark><\/strong>A) Provides oxygen and CO\u2082<br>B) Regulates temperature through greenhouse effect<br>C) Protects from UV radiation and meteors<br>D) All of the above<br><strong>Answer:<\/strong> D) All of the above<br><strong>Explanation:<\/strong> Atmosphere sustains life, regulates climate, and shields Earth.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. The atmosphere is the envelope of_____________.A) RocksB) AirC) WaterD) SoilAnswer: B) AirExplanation: Atmosphere is a mixture of gases surrounding the Earth. Show Answer Answer: B Explanation: The Sun is the gravitational center of the Solar System, around which all planets revolve. 2. Which gas is most abundant in the Earth\u2019s atmosphere?A) OxygenB) Carbon dioxideC)<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"[]"},"categories":[4283,14],"tags":[14587,14566,14576,14583,14580,14579,14577,14440,14585,14567,14568,14581,14578,14575,11098,14589,14582,14574,14563,14586,14562,5649,5652,14569,14584,14570,14348,14573,14571,14565,14441,14572,14540],"class_list":{"0":"post-13449","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-world-geography","7":"category-geography","8":"tag-air-composition-mcqs","9":"tag-air-pressure-mcqs","10":"tag-all-ready-for-exam-prep-and-seo-use","11":"tag-atmosphere-and-environment-mcqs","12":"tag-atmosphere-facts-and-figures","13":"tag-atmosphere-for-competitive-exams","14":"tag-atmosphere-important-terms","15":"tag-atmosphere-objective-questions","16":"tag-atmosphere-practice-questions","17":"tag-atmosphere-quiz","18":"tag-atmosphere-revision-questions","19":"tag-atmosphere-sample-questions","20":"tag-atmosphere-study-material","21":"tag-atmosphere-test-questions","22":"tag-atmosphere-top-100-mcqs-with-answer-and-explanation","23":"tag-atmospheric-phenomena-mcqs","24":"tag-climate-change-mcqs","25":"tag-exosphere-mcqs","26":"tag-global-circulation-mcqs","27":"tag-greenhouse-effect-mcqs","28":"tag-layers-of-atmosphere-mcqs","29":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-exams","30":"tag-mcqs-for-pc-psi-sda-fda-pdo-vao-banking-kas-ias-ssc-gd-ssc-chsl-ssc-cgl-for-all-compitative-examsin-kannada","31":"tag-mesosphere-mcqs","32":"tag-meteorology-mcqs","33":"tag-ozone-layer-mcqs","34":"tag-physical-geography-mcqs","35":"tag-stratosphere-mcqs","36":"tag-thermosphere-mcqs","37":"tag-troposphere-mcqs","38":"tag-weather-and-climate-mcqs","39":"tag-wind-patterns-mcqs","40":"tag-world-geography-mcqs"},"_links":{"self":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/13449","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/comments?post=13449"}],"version-history":[{"count":4,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/13449\/revisions"}],"predecessor-version":[{"id":48409,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/13449\/revisions\/48409"}],"wp:attachment":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/media?parent=13449"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/categories?post=13449"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/tags?post=13449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}