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Q. No.Given below are two statements :
Statement I:
The boiling point of hydrides of Group 16 elements follow the order
\(\text{H}_2 \text{O}>\text{H}_2 \text{Te}>\text{H}_2 \text{Se}>\text{H}_2 \text{S} .\)
Statement II:
On the basis of molecular mass, H2O is expected to have lower boiling point than the other members of the group but due to the presence of extensive H-bonding in H2O, it has higher boiling point.
In the light of the above statements, choose the correct answer from the options given below:
1. Both Statement I and Statement II are false.
2. Statement I is true and Statement II is false
3. Statement I is false but Statement II is true.
4. Both Statement I and Statement II are true.
\(\text{H}_2 \text{O}>\text{H}_2 \text{Te}>\text{H}_2 \text{Se}>\text{H}_2 \text{S} .\)
Subtopic: Group 16 - Preparation, Properties & Uses |
72%
Level 2: 60%+
NEET - 2024
Hints
Subtopic: Group 16 - Preparation, Properties & Uses |
70%
Level 2: 60%+
NEET - 2024
Hints
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 |
73%
Level 2: 60%+
NEET - 2023
Hints
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 |
Level 3: 35%-60%
NEET - 2022
Hints
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 |
60%
Level 2: 60%+
NEET - 2022
Hints
Chlorine shows the bleaching action in the presence of moisture due to the formation of
1. HOCl
2. HOClO
3. H2O2
4. Atomic oxygen
Subtopic: Group 17 - Preparation, Properties & Uses |
Level 3: 35%-60%
NEET - 2022
Hints
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 |
65%
Level 2: 60%+
NEET - 2022
Hints
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 |
Level 3: 35%-60%
NEET - 2022
Hints
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 |
74%
Level 2: 60%+
NEET - 2022
Hints
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%
Level 1: 80%+
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