A. MCQ-Choose the correct answers.
1. The acid present in sour milk is
(a) acetic acid
(b) lactic acid
(c) formic acid
(d) hydrochloric acid
2. The acid present in our stomach that helps in digestion of food is
(a) nitric acid
(b) acetic acid
(c) hydrochloric acid
(d) sulphuric acid
3. The colour of methyl orange in acids is
(a) yellow
(b) pink
(c) red
(d) orange
4. Acidic soil can be neutralised by adding
(a) quicklime
(b) vinegar
(c) nitric acid
(d) formic acid
5. The sting of an ant forms
(a) acetic acid
(b) formic acid
(c) lactic acid
(d) hydrochloric acid
6. Milk of magnesia contains a base called
(a) calcium hydroxide
(b) sodium hydroxide
(c) magnesium hydroxide
(d) potassium hydroxide
7. Which acid is called the king of chemicals?
(a) hydrochloric acid
(b) nitric acid
(c) sulphuric acid
(d) lactic acid
8. The sting of a wasp is
(a) acidic
(b) neutral
(c) basic
(d) none of these
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B, c, c, a, b, c, c OK thanks
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