Question
| A. Sc<sup>3+</sup> | 1. 3d<sup>1</sup> |
| B. Ti<sup>3</sup> | 2. 3d<sup>0</sup> |
| C. Mn<sup>2+</sup> | 3. 3d<sup>10</sup> |
| D. Zn<sup>2+</sup> | 4. 3d<sup>5</sup> |
✓
Answer
(A) - 2, (B) - 1, (C) - 4, (D) - 3
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| Column I | Column II |
| A. Liquid Aerosol | 1. Soda water |
| B. Solid Aerosol | 2. Fog |
| C. Foam | 3. Milk |
| D. Emulsion | 4. Smoke |
| Code: | A | B | C | D |
| (a) | 2 | 4 | 1 | 3 |
| (b) | 4 | 3 | 2 | 1 |
| (c) | 1 | 2 | 3 | 4 |
| (d) | 3 | 1 | 4 | 2 |
| Column-I | Column-II |
| A. Glycerol + dil. $HNO _3$ | 1. Meso oxalic acid |
| B. Glycerol + bismuth nitrate | 2. Oxalic acid |
| C. Glycerol + Fenton's reagent | 3. Glyceric acid + Tartronic acid |
| D. Glycerol + acidified $KMnO _4$ | 4. Glycerose |
| Code. | A | B | C | D |
| (a) | 3 | 1 | 4 | 2 |
| (b) | 1 | 2 | 3 | 4 |
| (c) | 4 | 3 | 2 | 1 |
| (d) | 2 | 4 | 1 | 3 |
| Column-I | Column-II |
| A. $H _2 O + H _3 O ^{+}$ | 1. Lewis base |
| B. $CH _3 COOH + CH _3 COONa$ | 2. Conjugate acid base pair |
| C. $BF _3, AlCl _3$ | 3. Buffer mixture |
| D. $CN ^{-}, SO _4{ }^{2-}$ | 4. Lewis acids |
(i) Zinc blende - (a) $Al _2 O _3 \cdot 2 H _2 O$
(ii) Bauxite - (b) $ZnCO _3$
(iii) Zincite - (c) ZnS
(iv) Calamine - (d) $ZnO$
→(ii) Bauxite - (b) $ZnCO _3$
(iii) Zincite - (c) ZnS
(iv) Calamine - (d) $ZnO$
| Column I | Column II |
| A. Solid in gas | 1. Foam |
| B. Gas in liquid | 2. Gel |
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| Code: | A | B | C | D |
| (a) | 1 | 2 | 3 | 4 |
| (b) | 4 | 3 | 2 | 1 |
| (c) | 3 | 1 | 4 | 2 |
| (d) | 2 | 4 | 1 | 3 |
| Code. | A | B | C | D |
| (a) | 3 | 4 | 1 | 2 |
| (b) | 2 | 3 | 4 | 1 |
| (c) | 1 | 2 | 3 | 4 |
| (d) | 4 | 1 | 2 | 3 |
| A. Cr | 1. $[ Ar ] 3 d^{10} 4 s^2$ |
| B. Cu | 2. $[ Ar ] 3 d^5 4 s^1$ |
| C. Zn | 3. $[ Ar ] 3 d^1 4 s^2$ |
| D. Sc | 4. $[ Ar ] 3 d^{10} 4 s^1$ |
| Column-I | Column-II |
| A. $CH _3 COO ^{-}$ | 1. Very weak acid |
| B. $NH _2{ }^{-}$ | 2. Weak base |
| C. $OH ^{-}$ | 3. Weak acid |
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(i) $N _2 O -($ a) +5
(ii) $N _2 O _4-$ (b) +3
(iii) $N _2 O _5-$ (c) +1
(iv) $N _2 O _3-$ (d) +4
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(iv) $N _2 O _3-$ (d) +4
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| (a) | 3 | 1 | 4 | 2 |
| (b) | 4 | 3 | 2 | 1 |
| (c) | 1 | 2 | 3 | 4 |
| (d) | 2 | 4 | 1 | 3 |