| Column I | Column II |
| A. Colloidal graphite | 1. Bredig's arc method |
| B. Colloidal gold | 2. Ultrasonic dispersion |
| C. Colloidal AgCl | 3. Mechanical dispersion |
| D. Colloidal mercury | 4. Peptisation |
| Code: | A | B | C | D |
| (a) | 1 | 2 | 3 | 4 |
| (b) | 4 | 3 | 2 | 1 |
| (c) | 2 | 4 | 1 | 3 |
| (d) | 3 | 1 | 4 | 2 |
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| Code. | A | B | C | D |
| (a) | 1 | 2 | 3 | 4 |
| (b) | 2 | 4 | 1 | 3 |
| (c) | 4 | 3 | 2 | 1 |
| (d) | 3 | 1 | 4 | 2 |
| Code. | A | B | C | D |
| (a) | 4 | 3 | 1 | 2 |
| (b) | 1 | 2 | 3 | 4 |
| (c) | 3 | 4 | 2 | 1 |
| (d) | 2 | 1 | 4 | 3 |
| A. Tungsten | 1. Development of human civilization |
| B. Titanium | 2. Light bulb filament |
| C. Molybdenum | 3. Artificial joint |
| D. Copper | 4. Boiler plants |
| Column I | Column II |
| A. $CH _3 CHO \rightarrow CH _4+ CO$ | 1. $pt$ |
| B. $C _{12} H _{22} O _{11}+ H _2 O \rightarrow C _6 H _{12} O _6+ C _6 H _{12} O _6$ | 2. $Fe$ |
| C. $N _2+3 H _2 \rightarrow 2 NH _3$ | 3. $I _2$ |
| D. $4 NH _3+5 O _2 \rightarrow 4 NO +6 H _2 O$ | 4. $H _2 SO _4$ |
| Code: | A | B | C | D |
| (a) | 4 | 3 | 1 | 2 |
| (b) | 3 | 4 | 2 | 1 |
| (c) | 2 | 1 | 4 | 3 |
| (d) | 1 | 2 | 3 | 4 |
| Column-I | Column-II |
| A. $HClO _4$ | 1. Very weak base |
| B. $HNO _2$ | 2. Very weak acid |
| C. $OH ^{-}$ | 3. Weak acid |
| D. $ClO _4^{-}$ | 4. Strong acid |
| Column I | Column II |
| A. Positive catalyst | 1. Glycerol |
| B. Negative Catalyst | 2. Molybdenum |
| C. Catalyst Poison | 3. $MnO _2$ |
| D. Promoter | 4. $H _2 S$ |
| Code: | A | B | C | D |
| (a) | 3 | 1 | 4 | 2 |
| (b) | 4 | 3 | 2 | 1 |
| (c) | 1 | 2 | 3 | 4 |
| (d) | 2 | 4 | 1 | 3 |
| 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 |
| (i) Resistance | (a) Ohm m |
| (ii) Resistivity | (b) $Sm ^{-1}$ |
| (iii) Conductance | (c) $Ohm$ |
| (iv) Specific conductance | (d) $S$ |
| Code: | A | B | C | D |
| $i$. | a | b | c | d |
| ii. | c | a | d | b |
| iii. | d | c | b | a |
| iv. | b | d | a | c |