Question

TICK (✓) THE CORRECT CHOICE AMONGST THE FOLLOWING:
1. Who prepared oxygen by the action of sun rays on mercuric oxide ?
(a) Karl scheele
(b) Joseph Priestley (C) Lavoisier
(d) John Dalton.
2. Which gas occupies a volume of one - fifth of the air ?
(a) Nitrogen
(b) Carbon dioxide (C) Oxygen
(d) Hydrogen
3. Which of the following represents the correct formula of potassium chlorate ?
(a) KCIO
(b) KCIO
(C) KCIO3
(d) K2CIO3
4. Rusting of iron is enhanced by the presence of which gas :
(a) Oxygen
(b) Nitrogen
(C) Carbon dioxide (d) None of these
5. Which metal oxide is mostly used in paints ?
(a) Silver oxide
(c) Red lead oxide (d) Sodium.
(b) Copper oxide​

Answer 1

Answer:

answer

Explanation:

1. Joseph Priestley

2. oxygen

3. KCIO3

4.sulfur dioxide

5. white titanium dioxide

Answer 2

Answer:

1. (b) Joseph Priestley
2. (c) Oxygen
3. (c) KCIO3
4. (b) Oxygen
5. (a) Silver Oxide