1. | |
2. | |
3. | |
4. |
1. | Mg plays role in neuromuscular function and interneuronal transmission. |
2. | The daily requirement of Mg and Ca in the human body is estimated to be 0.2-0.3 g. |
3. | All enzymes that utilize ATP in phosphate transfer require Ca as the cofactor. |
4. | The bone in the human body is an inert and unchanging substance. |
1. | \(\text{OH}^- \) | 2. | \(\text{NH}_3 \) |
3. | \(\text H_2 \text O \) | 4. | \(\text{BF}_3 \) |
1. | 2. | ||
3. | 4. | - |
Match the allotropes of cabon given in List I with the respective characteristics given in List II.
List-I | List-II | ||
A. | Coke | I. | Carbon atoms are sp3 hybridised. |
B. | Diamond | II. | Used as a dry lubricant |
C. | Fullerene | III. | Used as a reducing agent |
D. | Graphite | IV. | Cage like molecules |
Options: | (A) | (B) | (C) | (D) |
1. | III | IV | I | II |
2. | II | IV | I | III |
3. | IV | I | II | III |
4. | III | I | IV | II |
Statement I: | A unit formed by the attachment of a base to 1' position of sugar is known as a nucleoside. |
Statement II: | When nucleoside is linked to phosphorous acid at 5' position of sugar moiety we get nucleotide. |
1. | Statement I is false but Statement II is true. |
2. | Both Statement I and Statement II are true. |
3. | Both Statement I and Statement II are false. |
4. | Statement I is true but Statement II is false. |
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. | Vinylic halide | 2. | Benzylic halide |
3. | Aryl halide | 4. | Allylic halide |