Question
✓
Answer
(a) 4 3 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. 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. 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 |
(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
→(ii) $N _2 O _4-$ (b) +3
(iii) $N _2 O _5-$ (c) +1
(iv) $N _2 O _3-$ (d) +4
| Column-I | Column-II |
| A. Propan-2-ol | 1. Primary alcohol |
| B. 2-methyl -propan-2-ol | 2. Secondary alcohol |
| C. Butan-1-ol | 3. Aromatic alcohol |
| D. Phenyl methanol | 4. Tertiary alcohol |
| Code. | A | B | C | D |
| (a) | 2 | 4 | 1 | 3 |
| (b) | 1 | 2 | 3 | 4 |
| (c) | 4 | 3 | 2 | 1 |
| (d) | 3 | 1 | 4 | 2 |
| Column-I | Column-II |
| A. $pH =8$ | 1. Soapy water |
| B. $pH =10$ | 2. Drain cleaner |
| C. $pH =12$ | 3. Sea water |
| D. $pH =14$ | 4. Indigestion tablet |
| 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. $pH =9$ |
(i) Borax - (a) $Na _2 B _4 O _7$
(ii) Prismatic form - (b) $Na _2 B _4 O _7. 5 H _2 O$
(iii) Jeweller borax - (c) $Na _2 B _4 O _7. 10 H _2 O$
(iv) Borax glass - (d) $\left[ B _4 O _5( OH )_4\right]_2$
→(ii) Prismatic form - (b) $Na _2 B _4 O _7. 5 H _2 O$
(iii) Jeweller borax - (c) $Na _2 B _4 O _7. 10 H _2 O$
(iv) Borax glass - (d) $\left[ B _4 O _5( OH )_4\right]_2$
| Column-I | Column-II |
| A. $K _{ a }=\frac{\alpha^2 c }{1- c }$ | 1. $pH$ value |
| B. $pH = pK _{ a }+\log \frac{\text { [salt }]}{\text { [acid }]}$ | 2. Buffer capacity |
| C. $\beta=\frac{ dB }{ d ( pH )}$ | 3. Ostwald's dilution law |
| D. $-\log _{10}\left[ H _3 O ^{+}\right]$ | 4. Henderson - Hasselbalch equation |
| (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 |
(i) $XeF _4-$ (a) $s p^3$
(ii) $XeOF _2-$ (b) $sp ^3 d ^2$
(iii) $XeO _3-$ (c) $sp ^3 d ^3$
(iv) $XeF -$ (d) $s p^3 d$
→(ii) $XeOF _2-$ (b) $sp ^3 d ^2$
(iii) $XeO _3-$ (c) $sp ^3 d ^3$
(iv) $XeF -$ (d) $s p^3 d$