1. Radioactivity was discovered by:a) Marie Curieb) Henri Becquerelc) Rutherfordd) J.J. ThomsonAnswer: b) Henri BecquerelExplanation: In 1896, Henri Becquerel discovered…
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Which of the following materials is not attracted by a magnet?A) IronB) NickelC) CopperD) CobaltAnswer: C) CopperExplanation: Only ferromagnetic, paramagnetic…
1. What will be the simple interest on ₹5000 at 12% per annum for 2 years?a) ₹1000b) ₹1100c) ₹1200d) ₹1250Answer:…
1. A can do a work in 12 days. B can do it in 16 days. In how many days…
1. The ratio of 12 to 18 is:a) 1:2b) 2:3c) 3:4d) 4:5Answer: b) 2:3Explanation:Simplify 12:18 → divide both by 6…
1.The property by which a body returns to its original shape after removal of the deforming force is calledA) PlasticityB)…
1. What is the SI unit of work?a) Jouleb) Wattc) Newtond) PascalAnswer: a) JouleExplanation: Work is force times displacement. Its…
1. What is the nature of sound waves?a) Transverseb) Longitudinalc) Electromagneticd) None of the aboveAnswer: b) LongitudinalExplanation: Sound waves propagate…
1. The Vice-President of India is the:a) Head of the Stateb) Ex-officio Chairman of Rajya Sabhac) Head of the Governmentd)…
1. Who is the constitutional head of the Indian Union?A) Prime MinisterB) PresidentC) Vice-PresidentD) Chief Justice of IndiaAnswer: B) PresidentExplanation:…