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Q. No.Subtopic: Group 15 - Preparation, Properties & Uses |
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| Assertion (A): | Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures (on heating) or in the presence of catalysts. |
| Reason (R): | In nitrogen molecules, there is extensive delocalization of electrons. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Group 15 - Preparation, Properties & Uses |
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An oxyacid among the following that contains both P-H and P-P bonds simultaneously is:
1. H4P2O5
2. H4P2O7
3. H4P2O6
4. None of the above
Subtopic: Group 15 - Preparation, Properties & Uses |
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| Assertion (A): | Molecular nitrogen is less reactive than molecular oxygen. |
| Reason (R): | The bond length of N2 is shorter than that of oxygen. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True. |
Subtopic: Group 15 - Preparation, Properties & Uses |
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Given below are two statements:
| Assertion (A): | PCl3 fume in moisture. |
| Reason (R): | PCl3 reacts with water which is present in moisture and for Cl2. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Group 15 - Preparation, Properties & Uses |
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The reaction of with X leads
Selectively to . The X is
1. Dry
2. A mixture of and
3. Moist
4. in the presence of a aqueous NaO
Subtopic: Group 15 - Preparation, Properties & Uses |
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When \(NH_3\) gas is passed through Nessler's reagent, a red-brown solution is obtained. It is due to the formation of
1. Millon's base
2. Potassium mercuric iodide
3. \(HgI_2\)
4. \(K_2HgI_4 + KOH \)
1. Millon's base
2. Potassium mercuric iodide
3. \(HgI_2\)
4. \(K_2HgI_4 + KOH \)
Subtopic: Group 15 - Preparation, Properties & Uses |
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On hydrolysis, which one of the following gives a base as one of the products ?
1. NF3
2. NCl3
3. PCl3
4. BCl3
Subtopic: Group 15 - Preparation, Properties & Uses |
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Given below are two statements:
| Assertion (A): | HNO3 makes iron passive. |
| Reason (R): | HNO3 forms a protective layer of ferric nitrate on the surface of the iron. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
Subtopic: Group 15 - Preparation, Properties & Uses |
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Given below are two statements :
In the light of the above statements, choose the most appropriate answer from the options given below :
| Statement I: | Like nitrogen that can form ammonia, arsenic can form arsine. |
| Statement II: | Antimony cannot form antimony pentoxide. |
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Group 15 - Preparation, Properties & Uses |
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