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Q. No.Select the correct option based on the statements below:
Assertion (A):
ICl is more reactive than I₂.
Reason (R):
I-Cl bond is weaker than I-I bond.
1.
(A) is False but (R) is True.
2.
Both (A) and (R) are True and (R) is the correct explanation of (A).
3.
Both (A) and (R) are True but (R) is not the correct explanation of (A).
4.
(A) is True but (R) is False.
Subtopic: Group 17 - Preparation, Properties & Uses |
75%
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NEET - 2022
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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:
1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct
3. Both Statement I and Statement II are incorrect
4. Statement I is correct but Statement II is incorrect
| Statement I: | The boiling points of the following hydrides of group 16 elements increase in the order \(\mathrm{H}_{2} \mathrm{O}<\mathrm{H}_{2} \mathrm{~S}<\mathrm{H}_{2} \mathrm{Se}<\mathrm{H}_{2} \mathrm{Te} \) |
| Statement II: | The boiling points of these hydrides increase with the increase in molar mass. |
1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct
3. Both Statement I and Statement II are incorrect
4. Statement I is correct but Statement II is incorrect
Subtopic: Group 16 - Preparation, Properties & Uses |
From NCERT
NEET - 2022
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The correct order for boiling points of the following compounds is:
| 1. | AsH3 > PH3 > NH3 > SbH3 > BiH3 |
| 2. | BiH3 > SbH3 > NH3 > AsH3 > PH3 |
| 3. | NH3 > PH3 > AsH3 > SbH3 > BiH3 |
| 4. | PH3 > NH3 > AsH3 > SbH3 > BiH3 |
Subtopic: Group 15 - Preparation, Properties & Uses |
63%
From NCERT
NEET - 2022
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Chlorine shows the bleaching action in the presence of moisture due to the formation of
1. HOCl
2. HOClO
3. H2O2
4. O
Subtopic: Group 17 - Preparation, Properties & Uses |
From NCERT
NEET - 2022
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The reaction that is a part of large scale industrial preparation of nitric acid is:
| 1. | \(\mathrm{NaNO}_3+\mathrm{H}_2 \mathrm{SO}_4\xrightarrow[500~K, \ 9\text{ bar}]{Pt} \mathrm{NaHSO}_4+\mathrm{HNO}_3\) |
| 2. | \(4 \mathrm{NH}_3+5 \mathrm{O}_2 \text{(from air)}\xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{NO}+6 \mathrm{H}_2 \mathrm{O}\) |
| 3. | \(4 \mathrm{HPO}_3+2 \mathrm{~N}_2 \mathrm{O}_5\xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{HNO}_3+\mathrm{P}_4 \mathrm{O}_{10}\) |
| 4. | \(\mathrm{Cu}\left(\mathrm{NO}_3\right)_2+2 \mathrm{NO}_2+2 \mathrm{H}_2 \mathrm{O} \\ \xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{HNO}_3+\mathrm{Cu}\) |
Subtopic: Group 15 - Preparation, Properties & Uses |
61%
From NCERT
NEET - 2022
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Fluorine is a stronger oxidizing agent than chlorine because:
Choose the most appropriate answer from the options given :
| (a) | F–F bond has a low enthalpy of dissociation. |
| (b) | Flouride ion (F–) has high hydration enthalpy. |
| (c) | Electron gain enthalpy of fluorine is less negative than chlorine. |
| (d) | Fluorine has a very small size. |
| 1. | (a) and (b) only | 2. | (a) and (c) only |
| 3. | (a) and (d) only | 4. | (b) and (c) only |
Subtopic: Group 17 - Preparation, Properties & Uses |
From NCERT
NEET - 2022
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Match the Oxoacids of Sulphur given in List I with the number of bonds given in List II and mark the correct option.
Choose the correct answer from the options given below:
| List-I (Oxoacids of Sulphur) |
List-II (Bonds) |
||
| A. | Peroxodisulphuric acid | I. | Two S-OH, Four S=O, One S-O-S |
| B. | Sulphuric acid | II. | Two S-OH, One S=O |
| C. | Pyrosulphuric acid | III. | Two S-OH, Four S=O, One S-O-O-S |
| D. | Sulphurous acid | IV. | Two S-OH, Two S=O |
| Options: | A | B | C | D |
| 1. | III | IV | II | I |
| 2. | I | III | II | IV |
| 3. | III | IV | I | II |
| 4. | I | III | IV | II |
Subtopic: Group 16 - Preparation, Properties & Uses |
71%
From NCERT
NEET - 2023
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It is difficult to study the chemistry of Radon because :
| 1. | It is a radioactive substance. |
| 2. | It is a very stable substance. |
| 3. | Half-life of Radon is longer. |
| 4. | It forms variety of compounds. |
Subtopic: Group 18 - Preparation, Properties & Uses |
90%
From NCERT
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The bleaching action of Cl2 is due to formation of :
1. Nascent chlorine.
2. Nascent oxygen.
3. Oxygen gas.
4. Hypochlorous acid.
1. Nascent chlorine.
2. Nascent oxygen.
3. Oxygen gas.
4. Hypochlorous acid.
Subtopic: Group 17 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses |
72%
From NCERT
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Sea is the greatest source of :
1. Halogens.
2. Noble gases.
3. Alkaline earth metals.
4. Chalcogens.
Subtopic: Group 17 - Preparation, Properties & Uses |
77%
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