One Mark Questions Answers

CHEMISTRY

ACIDS, BASES AND SALTS

TEXT BOOK EXERCISES

I. Choose the correct answer :

1. Zn + 2 HCl → ZnCl₂ + ....↑ (H₂, O₂, CO₂)

[Answer: H₂]

2. Apple contains malic acid. Orange contains _――― (citric acid, ascorbic acid).

[Answer: ascorbic acid]

3. Acids in plants and animals are organic acids. Whereas Acids in rocks and minerals are _――― (Inorganic acids, Weak acids).

[Answer: Inorganic acids]

4. Acids turn blue litmus paper to _――― (green, red, orange).

[Answer: Red]

5. Since metal carbonate and metal bicarbonate are basic, they react with acids to give salt and water with the liberation of ____________ (NO_2, SO₂ , CO₂).

[Answer: CO₂]

6. The hydrated salt of copper sulphate has _――― colour (red, white, blue).

[Answer: Blue]