Question
| 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 |
✓
Answer
3 4 1 2
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
| Column I | Column II |
| A. Drying air | 1. Animal charcoal |
| B. Purification of $CO _2$ | 2. Silica gel |
| C. Adsorption of $Ca ^{2+}$ and $Mg ^{2+}$ | 3. Alumina |
| D. Decolouring agent | 4. Permutit |
| Code: | A | B | C | D |
| (a) | 2 | 3 | 4 | 1 |
| (b) | 1 | 2 | 3 | 4 |
| (c) | 4 | 1 | 2 | 3 |
| (d) | 3 | 4 | 1 | 2 |
| Column-I | Column-II |
| A. Strong base | 1. $OH ^{-}$ |
| B. Weak base | 2. $O ^{2-}$ |
| C. Very weak base | 3. $F ^{-}$ |
| D. Very weak acid | 4. $NO _3^{-}$ |
| Column I | Column II |
| A. Haber's process | 1. Anhydrous $AlCl _3$ |
| B. Vanaspathi preparation | 2. $Pt$ (or) $V _2 O _5$ |
| C. Contact process | 3. $Fe / Mo$ |
| D. Freidel crafts reaction Samac | 4. Nickel |
| Code: | A | B | C | D |
| (a) | 1 | 2 | 3 | 4 |
| (b) | 3 | 4 | 2 | 1 |
| (c) | 4 | 3 | 1 | 2 |
| (d) | 2 | 1 | 4 | 3 |
| 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 |
| (i) Li-ion battery | (a) Pacemakers |
| (ii) Mercury button cell | (b) Fuel cell |
| (iii) Lead storage battery | (c) Cell phone |
| (iv) $H _2- O _2$ cell | (d) Inverter |
| Code: | A | B | C | D |
| $i$. | a | b | c | d |
| ii. | d | c | b | a |
| iii. | b | d | a | c |
| iv. | c | a | d | b |
| A. Tungsten | 1. Development of human civilization |
| B. Titanium | 2. Light bulb filament |
| C. Molybdenum | 3. Artificial joint |
| D. Copper | 4. Boiler plants |
| Code. | A | B | C | D |
| (a) | 2 | 3 | 4 | 1 |
| (b) | 1 | 2 | 3 | 4 |
| (c) | 4 | 1 | 2 | 3 |
| (d) | 3 | 4 | 1 | 2 |
| Code. | A | B | C | D |
| (a) | 2 | 3 | 4 | 1 |
| (b) | 1 | 2 | 3 | 4 |
| (c) | 4 | 1 | 2 | 3 |
| (d) | 3 | 4 | 1 | 2 |
| Column I | Column II |
| A Physical adsorption | 1. Sorption of gases on metal surface |
| B Chemical adsorption | 2. Simultaneous adsorption and absorption |
| C Sorption | 3. Transfer of electrons |
| D Occulsion | 4. Van der Waals force of attraction |
| Code: | A | B | C | D |
| (a) | 1 | 2 | 3 | 4 |
| (b) | 4 | 3 | 2 | 1 |
| (c) | 3 | 4 | 1 | 2 |
| (d) | 2 | 1 | 4 | 3 |