- 1(current)
Q. No.Given below are two statements:
| Assertion (A): | Zn(ll) salts are diamagnetic. |
| Reason (R): | Zn2+ ion has one unpaired electron. |
| 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: Â Resonance & Nature of Compounds |
 76%
Level 2: 60%+
Hints
The incorrect statements among the following are-
| (a) | NaCl being an ionic compound is a good conductor of electricity in the solid-state |
| (b) | In canonical structure, there is a difference in the arrangement of atoms |
| (c) | Hybrid orbitals form stronger bonds than pure orbitals |
| (d) | VSEPR theory can explain the square planar geometry of XeF4 |
| 1. | (a) and (b) only | 2. | (b) and (c) only |
| 3. | (c) and (d) only | 4. | (b) and (d) only |
Subtopic: Â Resonance & Nature of Compounds |Â V.S.E.P.R & V.B.T |
 70%
Level 2: 60%+
Hints
Among the following, the correct statements about
| (a) |
The hybridisation of the central atom is sp3. |
| (b) |
Its resonance structure has one C-O single bond and two C=O double bonds. |
| (c) |
The average formal charge on each oxygen atom is 0.67 units. |
| (d) |
All C-O bond lengths are equal. |
Choose the correct option :
| 1. | (a), (b) | 2. | (b), (c) |
| 3. | (c), (d) | 4. | (b), (d) |
Subtopic: Â Octate, Isoelectronic Species, Lewis Structure & Formal Charge |Â Resonance & Nature of Compounds |Â V.S.E.P.R & V.B.T |
 68%
Level 2: 60%+
Hints
Match the items given in Column I with examples given in Column II.
|
Column I (type of Bonds) |
Column II |
||
| A. |
Hydrogen bond |
1. |
Carbon |
| B. |
Resonance |
2. |
LiF |
| C. |
Ionic solid |
3. |
H2 |
| D. |
Covalent solid |
4. |
HF |
| 5. |
O3 |
Codes:
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 1 | 2 | 3 | 5 |
| 3. | 5 | 4 | 3 | 2 |
| 4. | 4 | 5 | 2 | 1 |
Subtopic: Â Resonance & Nature of Compounds |
 92%
Level 1: 80%+
Hints
- 1(current)
Q. No.
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