When Sodium bicarbonate reacts with dilute hydrochloric acid, the gas evolved is.

These are the options for the question :When Sodium bicarbonate reacts with dilute hydrochloric acid, the gas evolved is.

(a) Hydrogen; it gives a pop sound with a bumping match stick.
(b) Hydrogen; it turns lime water milky.
(c) Carbon dioxide; it turns lime water milky.
(d) Carbon dioxide; it blows off a bumping match stick with a pop sound.

The correct answer is -(c) Carbon dioxide; it turns lime water milky.