Question

Mohan prepared lime water and next month used for the experiment showing CO2is evolved in the process of respiration option one white precipitate is formed option to White precipitate is not formed option three lime water must be fresh option for lime water can be used anytime

Answer 1

The answer is :

Lime water must be fresh to do this experiment.

Reason :

When lime water is left for some times the Carbon (iv) oxide in the atmosphere dissolves in lime.

This implies that by the time we will be carrying out the experiment the white precipitate will already be there.

Therefore to obtain the best result we need fresh lime water.

Answer 2

Answer:- Option 2

***White precipitate is not formed***