1. | Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron. |
2. | Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen. |
3. | Hydrolysis of sugar catalysed by H+ ions. |
4. | Decomposition of ozone in presence of nitrogen monoxide. |
1. | Enzymes are very specific for a particle reaction and substrate. |
2. | Enzymes are biocatalysts. |
3. | Like chemical catalysts, enzymes reduce the activation energy of bio processes. |
4. | Enzymes are polysaccharides. |
Which one of the following statements about enzyme catalysis is incorrect?
1. | Enzymes are mostly proteinous in nature. |
2. | Enzyme action is specific. |
3. | Enzymes are denaturized by ultraviolet rays at high temperatures. |
4. | Enzymes are least reactive at an optimum temperature. |
Which of the following is correct:
1. Cycloheptane is an aromatic compound
2. Diastase is an enzyme
3. Acetophenone is an ether
4. All the above