MCQ
Find the odd one out :
- AVitamin – $-B_{12}$
- BHaemoglobin
- CChlorophyll
- ✓Glycine
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| Column I | Column II |
| A. Vitamin A | 1. Pellagra |
| B. Vitamin $B _1$ | 2. Xerophthalmia |
| C. Vitamin $B_2$ | 3. Beri Beri |
| D. Vitamin $B_3$ | 4. Cheilosis |
| Column - I | Column - II |
| A. Phenyl hydroxyl amine | 1. $C _6 H _5- N = O$ |
| B. Azo benzene | 2. $C _6 H _5 NH - NH C _6 H _5$ |
| C. Hydrazo benzene | 3. $C _6 H _5 NHOH$ |
| D. Nitroso benzene | 4. $C _6 H _5 N = N C _6 H _5$ |
The hydrogen ion concentration of a buffer solution consisting of a weak acid and its salts is given by
$
\left[ H ^{+}\right]= K _{ a } \frac{[ acid ]}{[\text { salt }]}
$
$
\left.\left[ H ^{+}\right]= K _{ a } \text { [salt }\right]
$
$
\left[ H ^{+}\right]= K _{ a } \text { [acid] }
$
$
\left[ H ^{+}\right]= K _{ a } \frac{[\text { salt }]}{[\text { acid }]}
$