Question
| 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 |
✓
Answer
3 1 4 2
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(i) Gold nanopaticle – (a)Cast iron
(ii) Cast iron – (b) Cooking vessels
(iii) Metallic zinc – (c) Solar cells
(iv) Aluminium – (d) Pump stoves
(ii) Cast iron – (b) Cooking vessels
(iii) Metallic zinc – (c) Solar cells
(iv) Aluminium – (d) Pump stoves
| 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 |
(i) Nitrogen sesquoxide - (a) $H _2 N _2 O _2$
(ii) Nitrous oxide - (b) $H _4 N _2 O _4$
(iii) Hyponitrous acid - (c) $N _2 O$
(iv) Hydronitrous acid - (d) $N _2 O _3$
→(ii) Nitrous oxide - (b) $H _4 N _2 O _4$
(iii) Hyponitrous acid - (c) $N _2 O$
(iv) Hydronitrous acid - (d) $N _2 O _3$
| Column I | Column II |
| A. Penicillin | 1. Stomach trouble |
| B. Colloidal gold | 2. Eye lotion |
| C. Milk of magnesia | 3. Tonic |
| D. Argyrol | 4. Antibodies |
| 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 |
| Column-I | Column-II |
| A. $HF$ | 1. Strong acid |
| B. $H _2 SO _4$ | 2. Strong base |
| C. $H _2$ | 3. Weak acid |
| D. $O ^{2-}$ | 4. Very weak acid |
| A. Tungsten | 1. Development of human civilization |
| B. Titanium | 2. Light bulb filament |
| C. Molybdenum | 3. Artificial joint |
| D. Copper | 4. Boiler plants |
| List-I | List-II |
| A. Acid hydrolysis of an ester | 1. Fractional order reaction |
| B. Decomposition of $H _2 O _2$ | 2. Second order reaction |
| C. Decomposition of $CH _3 CHO$ | 3. Pseudo first order reaction |
| D. Substitution of methyl bromide with aqueous $KOH$. | 4. First order reaction |
| Code | A | B | C | D |
| (a) | 3 | 4 | 1 | 2 |
| (b) | 4 | 2 | 3 | 1 |
| (c) | 1 | 3 | 2 | 4 |
| (d) | 2 | 1 | 4 | 3 |
| 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 |
| Electrolyte | Battery |
| (i) $NH _4 Cl + ZnCl _2+ H _2 O$ | (a) Mercury button cell |
| (ii) Paste of $KOH$ and $ZnO$ | (b) Lithium - ion battery |
| (iii) $38 \%$ by mass of $H _2 SO _4$ | (c) Leclanche cell |
| (iv) Lithium salt in an organic solvent | (d) Lead storage battery |
| Code: | A | B | C | D |
| $i$. | c | a | d | b |
| ii. | d | c | b | a |
| iii. | a | b | c | d |
| iv. | b | d | a | c |
| 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 |