1. Who is regarded as father of modern chemistry ? A. Ruterford B. Einstein C. Lavoisier D. C.V. Raman Answer : C |
2. The term PVC used in the plastic industry stands forA. polyvinyl chloride B. polyvinyl carbobate C. phosphor vanadiu chloride D. phosphavinyl chloride Answer : A |
3. What among following is used to produce artificial rain ?A. copper oxide B. carbon monoxide C. silver iodide D. silver nitrate Answer : C |
4. What nucleus of atom contains ?A. protons B. electrons C. electrons and protons D. protons and neutrons Answer : D |
5. Human bone does not containA. calcium B. carbon C. oxygen D. phosphorous Answer : C |
6. Air contains maximum amount ofA. oxygen B. nitrogen C. hydrogen D. carbon dioxide Answer : B |
7. Oil of vitriol isA. nitric acid B. sulphuric acid C. hydrochloric acid D. phosphoric acid Answer : B |
8. Which metal is heaviest ?A. osmium B. mercury C. iron D. nickle Answer : B |
9. Who proposed first atomic theory ?A. E.Rutherford B. De Broglie C. John Dalton D. D.I.Mendeleef Answer : C |
10. Bleaching action of chlorine is byA. decomposition B. hydrolysis C. reduction D. oxidation Answer : A |
Bleaching action of chlorine is by decomposition and not oxidation. Is the answer correct?