Question

Metal + dilute acids ➝ Salt + _________

a) water
b) hydrogen gas
c) carbon dioxide
d) carbon monoxide​

Answer 1

Answer:

b) hydrogen gas , is the correct answer.

Answer 2

Acid + Metal carbonate ⟶ Salt + Water + Carbon dioxide.

Thus, the gas is carbon dioxide and the product is water, option A is correct.

Example-

CaCO

3

(calcium carbonate-metal carbonate) + 2HCl ⟶ CaCl

2

(calcium chloride-salt) + H

2

O + CO

2