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Q. No.
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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If the boiling point of H2O is 373 K, the boiling point of H2S will be:
1. Greater than 300 K but less than 373 K
2. Less than 300 K
3. More than 373 K
4. Equal to 373 K
Subtopic: Group 16 - Preparation, Properties & Uses |
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JEE
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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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Subtopic: Group 16 - Preparation, Properties & Uses |
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Subtopic: Group 18 - Preparation, Properties & Uses |
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The correct order of acidic strength of HPO3, H3PO4, H3PO3 and H3PO2 is:
\(1. \mathrm{HPO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{4}>\mathrm{H}_{3} \mathrm{PO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{2}\\ 2. \mathrm{H}_{3} \mathrm{PO}_{4}>\mathrm{H}_{3} \mathrm{PO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{2}>\mathrm{HPO}_{3}\\ 3.\mathrm{HPO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{2}>\mathrm{H}_{3} \mathrm{PO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{4}\\ 4.\mathrm{H}_{3} \mathrm{PO}_{2}>\mathrm{H}_{3} \mathrm{PO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{4}>\mathrm{H} \mathrm{PO}_{3}\)
\(1. \mathrm{HPO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{4}>\mathrm{H}_{3} \mathrm{PO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{2}\\ 2. \mathrm{H}_{3} \mathrm{PO}_{4}>\mathrm{H}_{3} \mathrm{PO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{2}>\mathrm{HPO}_{3}\\ 3.\mathrm{HPO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{2}>\mathrm{H}_{3} \mathrm{PO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{4}\\ 4.\mathrm{H}_{3} \mathrm{PO}_{2}>\mathrm{H}_{3} \mathrm{PO}_{3}>\mathrm{H}_{3} \mathrm{PO}_{4}>\mathrm{H} \mathrm{PO}_{3}\)
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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The most acidic oxyacid of phosphorous is
1. \(H_3PO_4 \)
2. \(HPO_3 \)
3. \(H_4P_2O_7 \)
4. \(H_3PO_2 \)
1. \(H_3PO_4 \)
2. \(HPO_3 \)
3. \(H_4P_2O_7 \)
4. \(H_3PO_2 \)
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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| 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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