- 1(current)
Q. No.The acidity of diprotic acids in aqueous solution increases in the order:
1. H2S < H2Se < H2Te
2. H2Se < H2S < H2Te
3. H2Te < H2S < H2Se
4. H2Se < H2Te < H2S
Subtopic: Group 16 - Preparation, Properties & Uses |
88%
From NCERT
AIPMT - 2014
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The number of \(\mathrm{S=O}\) bonds present in \(\mathrm{H}_2\mathrm{S}_2 \mathrm{O}_8\) is:
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Subtopic: Group 16 - Preparation, Properties & Uses |
81%
From NCERT
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The physical property of hydrides of group 16 that decreases down the group is:
| 1. | Melting point | 2. | Thermal stability |
| 3. | Boiling point | 4. | Critical temperature |
Subtopic: Group 16 - Preparation, Properties & Uses |
80%
From NCERT
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Subtopic: Group 16 - Preparation, Properties & Uses |
75%
From NCERT
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Oxygen forms hydrogen bonds while chlorine does not, because :
| 1. | Chlorine has a bigger size and as a result, a higher electron density per unit volume. |
| 2. | Oxygen has a smaller size and as a result, a lower electron density per unit volume. |
| 3. | Oxygen has a smaller size and as a result, a higher electron density per unit volume. |
| 4. | Oxygen has a bigger size and as a result, a higher electron density per unit volume. |
Subtopic: Group 16 - Preparation, Properties & Uses |
73%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | Both rhombic and monoclinic sulphur exist as S8 but oxygen exists as O2. |
| Reason (R): | Oxygen forms pπ - pπ multiple bonds due to its small size and small bond length but pπ - pπ bonding is not possible in sulphur. |
| 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 16 - Preparation, Properties & Uses |
71%
From NCERT
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The bleaching action of SO2 is due to its
1. Acidic property
2. Basic property
3. Reducing property
4. Oxidising property
Subtopic: Group 16 - Preparation, Properties & Uses |
65%
From NCERT
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Select the correct option based on statements below:
| Assertion (A): | The valency and oxidation number of sulphur in S8 respectively are 2 and 0. |
| Reason (R): | S8 Rhombic is the most stable allotropic form of sulphur. |
| 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 16 - Preparation, Properties & Uses |
70%
From NCERT
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Which of the following statements is false?
| 1. | H3PO2, H3PO3 and H3PO4 all are tribasic and reducing in nature. |
| 2. | Amongst anions \(NO_{3}^{-}\), \(SO_{3}^{2-}\), \(CO_{3}^{2-}\), and \(BO_{3}^{3-}\), only \(SO_{3}^{2-}\) have pπ-dπ bonding . |
| 3. | Amongst anions \(SO_{3}^{2-}\), \(SO_{4}^{2-}\), \(S_{2}O_{4}^{2-}\) and \(HSO_{4}^{-}\), \(SO_{3}^{2-}\) is basic and reducing in nature. |
| 4. | Number of lone pair(s) of electrons on Xe atoms in XeF2, XeF4 and XeF6 are 3, 2 and 1 respectively._ |
Subtopic: Group 18 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses | Group 15 - Preparation, Properties & Uses |
78%
From NCERT
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- 1(current)
Q. No.
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