| 261. | Which of the following process is used to make dalda or vanaspati ghee from vegetable oil? |
A. hydrolytic | |
B. oxidation | |
C. hydrogenation | |
D. ozone depleting |
| 262. | Which method is used in the industrial production of vanaspati ghee? |
A. disconnection | |
B. degradation | |
C. oxidation | |
D. ionization |
| 263. | Why is hydrogen not found in the atmosphere? |
A. it is highly flammable | |
B. it is the lightest gas | |
C. plants absorb it | |
D. It readily combines with oxygen to form water |
| 264. | If there is no carbon dioxide in the earth then the temperature of the earth’s surface – |
A. depends on the amount of oxygen | |
B. current will exceed | |
C. will be less than current | |
D. will remain the same |
| 265. | Which is the major green house gas? |
A. carbon dioxide | |
B. chlorofluorocarbons | |
C. carbon monoxide | |
D. Freon |
| 266. | Which of the following acid is present in the battery? |
A. hydrochloric acid | |
B. hydrofluoric acid | |
C. sulfuric acid | |
D. sulfuric acid |
| 267. | Which is the purest form of water? |
A. tap water | |
B. rain water | |
C. ground water | |
D. distilled water |
| 268. | Which one of the following is not a nitrogenous fertilizer? |
A. ammonium sulphate | |
B. urea | |
C. ammonium nitrate | |
D. superphosphate |
| 269. | The bubbles in champagne and soda are – |
A. carbon dioxide | |
B. Hydrogen | |
C. nitrogen | |
D. oxygen |
| 270. | In which form H₂SO₄ cannot be used? |
A. drying agent | |
B. dehydrating | |
C. germicidal | |
D. food preservation |