| (i) $Zn$-anode, Graphite-cathode with $MnO _2$ | (a) Lithium - ion battery reer |
| (ii) $Zn$ amalgamated with mercurry anode, sama $HgO$ mixed with graphite cathode | (b) Leclanche cell |
| (iii) Spongy lead anode, lead plate bearing $PbO _2$ | (c) Mercury button cell |
| (iv) Porous graphite anode, $CoO _2$ cathode | (d) Lead storage battery |
| Code: | A | B | C | D |
| $i$. | b | c | d | b |
| ii. | a | b | b | a |
| iii. | d | a | c | d |
| iv. | c | d | a | c |
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| List-I | List-II |
| A. $t_{1 / 2}$ of first order reaction | 1. $k=\frac{2.303}{t} \log \left[\frac{\left( A _0\right)}{( A )}\right]$ |
| B. $t_{1 / 2}$ of $n^{\text {th }}$ order | 2. $f=e^{-\frac{E_a}{R T}}$ |
| C. Fraction of effective collision | 3. $\frac{0.6932}{k}$ |
| D. Rate constant of first order reaction | 4. $\frac{2^{n-1}-1}{(n-1) k\left( A _0\right)^{n-1}}$ |
| 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. 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. Oxidation of $HCl$ by air | 1. Nickel |
| B. Formation of water | 2. $MnO _2$ |
| C. Decomposition of $KClO _3$ | 3. Copper |
| D. Hydrogenation of $C _2 H _4$ | 4. $CuCl _2$ |
| Code: | A | B | C | D |
| (a) | 4 | 3 | 2 | 1 |
| (b) | 1 | 2 | 3 | 4 |
| (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. Orange juice | 1. $pH =11$ |
| B. Ammonia solution | 2. $pH =3$ |
| C. Baking soda | 3. $pH =4$ |
| D. Tomato | 4. $pH =9$ |
| List-I | List-II |
| A. $N _2 O ( g ) \leftrightharpoons N _2( g )+1 / 2 O _2( g )$ | 1. Order $=1$ |
| B. $SO _2 Cl _2( g ) \rightarrow SO _2( g )+ Cl _2( g )$ | 2. Order $=4$ |
| C. $CH _3 CHO ( g ) \rightarrow CH _4( g )+ CO ( g )$ | 3. Order $=0$ |
| D. $5 Br ^{-}{ }_{( aq )}+ BrO _3^{-}{ }_{( aq )}+6 H ^{+} \rightarrow 3 Br _{2 \text { (l) }}+3 H _2 O _{( l )}$ | 4. Order $=3 / 2$ |
| Code | A | B | C | D |
| (a) | 3 | 1 | 4 | 2 |
| (b) | 4 | 2 | 1 | 1 |
| (c) | 2 | 4 | 3 | 3 |
| (d) | 1 | 3 | 2 | 4 |
| 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> |
| 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 |