Subject :NSO Class : Class 7
A few substances are listed in the box.
(i) Sulphuric acid
(ii) Sodium bicarbonate
(iii) Sodium hydroxide
(iv) Ammonium hydroxide
(v) Sodium sulphate
(vi) Ammonium sulphate
(vii) Sodium chloride
(viii) Formic acid
(ix) Tartaric acid
(x) Nitric acid
Now, read the given passage and select the correct option. Substances __(p)__ are strong mineral acids while substances __(q)__ are weak organic acids. Aqueous solutions of substances __(r)__ will turn China rose indicator green while substances __(s)__ will have no effect on China rose indicator.
(ii) Sodium bicarbonate
(iii) Sodium hydroxide
(iv) Ammonium hydroxide
(v) Sodium sulphate
(vi) Ammonium sulphate
(vii) Sodium chloride
(viii) Formic acid
(ix) Tartaric acid
(x) Nitric acid
| (p) | (q) | (r) | (s) | |
|---|---|---|---|---|
| A | (i), (x) | (viii), (ix) | (ii), (iii), (iv) | (v), (vii) |
| B | (i), (iii) | (v), (vii) | (ii), (viii), (x) | (iv), (vi), (ix) |
| C | (ii), (v) | (iii), (vii), (ix) | (i), (vi) | (iv), (viii), (x) |
| D | (i), (iii) | (viii), (ix), (x) | (ii), (v), (vii) | (iv), (vi) |