Q. No.Match the species given in Column I with the shape given in Column II and mark the correct option:
| Column I (Species) | Column II (Shape) | ||
| A. | \(\mathrm{SF}_4\) | (I) | Tetrahedral |
| B. | \(\mathrm{BrF}_3\) | (II) | Pyramidal |
| C. | \(\mathrm{BrO}_3^{-}\) | (III) | Sea-saw shaped |
| D. | \(\mathrm{NH}_4^{+}\) | (IV) | Bent T-shaped |
Codes:
| A | B | C | D | |
| 1. | III | II | I | IV |
| 2. | III | IV | II | I |
| 3. | I | II | III | IV |
| 4. | I | IV | III | II |
Subtopic: Group 17 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses | Group 15 - Preparation, Properties & Uses |
84%
Level 1: 80%+
Hints
Which of the following accounts for H₂O being a liquid while H₂S is a gas at room temperature?
1. Stronger van der Waals force in H2O
2. Stronger hydrogen bonding in H2O
3. Stronger ion-dipole interaction in H2O
4. High dissociation constant of H2O
1. Stronger van der Waals force in H2O
2. Stronger hydrogen bonding in H2O
3. Stronger ion-dipole interaction in H2O
4. High dissociation constant of H2O
Subtopic: Group 16 - Preparation, Properties & Uses |
91%
Level 1: 80%+
Hints
Condition(s)to maximize the yield of H2SO4 by Contact process is/are :
1. Low temperature.
2. High temperature.
3. High pressure.
4. Both (1) and (3)
1. Low temperature.
2. High temperature.
3. High pressure.
4. Both (1) and (3)
Subtopic: Group 16 - Preparation, Properties & Uses |
89%
Level 1: 80%+
Hints
Subtopic: Group 16 - Preparation, Properties & Uses |
87%
Level 1: 80%+
NEET - 2019
Hints
| Assertion (A): | O3 acts as a powerful oxidizing agent. |
| Reason (R): | Ozone decomposes readily on heating to give a molecule of oxygen and nascent 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 16 - Preparation, Properties & Uses |
87%
Level 1: 80%+
Hints
Which of the following sets represents elements of the chalcogen group?
1. \(O,~Ti\) and \(Po\)
2. \(Se, ~Te\) and \(Po\)
3. \(Se,~ Tb\) and \(Pu\)
4. \(S, ~Te\) and \(Pm\)
1. \(O,~Ti\) and \(Po\)
2. \(Se, ~Te\) and \(Po\)
3. \(Se,~ Tb\) and \(Pu\)
4. \(S, ~Te\) and \(Pm\)
Subtopic: Group 16 - Preparation, Properties & Uses |
88%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The correct order of bond strength of H2O, H2S, H2Se, H2Te is:
1. \(\mathrm{{H}_2 {O}>{H}_2 {~S}>{H}_2 {Se}>{H}_2 {Te}} \)
2. \(\mathrm{{H}_2 {~S}>{H}_2 {O}>{H}_2 {Se}>{H}_2 {Te}} \)
3. \(\mathrm{{H}_2 {Te}>{H}_2 {Se}>{H}_2 {~S}>{H}_2 {O}} \)
4. \(\mathrm{{H}_2 {Te}>{H}_2 {~S}>{H}_2 {O}>{H}_2} \mathrm{Se} \)
1. \(\mathrm{{H}_2 {O}>{H}_2 {~S}>{H}_2 {Se}>{H}_2 {Te}} \)
2. \(\mathrm{{H}_2 {~S}>{H}_2 {O}>{H}_2 {Se}>{H}_2 {Te}} \)
3. \(\mathrm{{H}_2 {Te}>{H}_2 {Se}>{H}_2 {~S}>{H}_2 {O}} \)
4. \(\mathrm{{H}_2 {Te}>{H}_2 {~S}>{H}_2 {O}>{H}_2} \mathrm{Se} \)
Subtopic: Group 16 - Preparation, Properties & Uses |
86%
Level 1: 80%+
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Mark the incorrect statement about Sulphuric acid (H2SO4):
| 1. | It is used in the fertilizer industry. |
| 2. | It is used in the manufacture of pigments, paints, and detergents. |
| 3. | It is used in the manufacture of storage batteries. |
| 4. | It is a weak dehydrating agent. |
Subtopic: Group 16 - Preparation, Properties & Uses |
86%
Level 1: 80%+
Hints
The important source(s) of sulphur among the following is/are:
1. Gypsum
2. Epsom salt
3. Galena
4. All of the above
1. Gypsum
2. Epsom salt
3. Galena
4. All of the above
Subtopic: Group 16 - Preparation, Properties & Uses |
87%
Level 1: 80%+
Hints
The oxoacid of sulphur that does not contain a bond between sulphur atoms is:
1. H2S2O7
2. H2S2O3
3. H2S4O6
4. H2S2O4
Subtopic: Group 16 - Preparation, Properties & Uses |
83%
Level 1: 80%+
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Please attempt this question first.
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