GENERAL SCIENCE (GENERAL STUDIES) Part-3Total Questions: 5011. How many neutrons are there in ₉₂U²³⁸ atom ?(a) 92(b) 238(c) 146(d) 330Correct Answer: (c) 14612. Polyvinylchloride on burning give fumes of(a) HCl(b) Cl₂(c) H₂(d) None of theseCorrect Answer: (a) HCl13. Which of the following is the best conductor of electricity:(a) Gold(b) Silver(c) Copper(d) IronCorrect Answer: (b) Silver14. Find the odd one.(a) Marble(b) Chalk(c) Limestone(d) Slaked limeCorrect Answer: (d) Slaked lime15. Amides can be converted to amines by the reaction named(a) Perkin(b) Claisen(c) Hoffman(d) ClemmesenCorrect Answer: (c) Hoffman16. The base used as an antacid is(a) Calcium hydroxide(b) Barium hydroxide(c) Magnesium hydroxide(d) Silver hydroxideCorrect Answer: (c) Magnesium hydroxide17. A process which is not helpful in the prevention of rusting of iron is(a) annealing(b) applying grease(c) galvanising(d) paintingCorrect Answer: (a) annealing18. Denatured alcohol(a) is a form of alcohol(b) is unfitfor drinking asit contains poisonoussubstances(c) contains coloured impurities(d) is sweet to tasteCorrect Answer: (b) is unfitfor drinking asit contains poisonoussubstances19. Phenolics as pollutants can be removed from waste water by use of(a) Ion exchange resin technique(b) Electrolyte decomposition technique(c) Reverse osmosis method(d) Polymeric adsorbentsCorrect Answer: (d) Polymeric adsorbents20. Metal reacts with oxygen to form(a) neutral oxides.(b) basic oxides.(c) acidic oxides.(d) None of theseCorrect Answer: (b) basic oxides.Submit Quiz« Previous12345Next »
