Question

4
Assertion: After white washing the walls, a shiny white finish on walls is
obtained after two to three days
Reason: Calcium Oxide reacts with Carbon dioxide to fomm Calcium
Hydrogen Carbonate which gives shiny white finish​

Answer 1

Answer:

thanks for free points.

Explanation:

the reason is also given by you yourself.

Answer 2

Explanation:

Calcium Oxide reacts with Carbon dioxide to form Calcium Hydrogen Carbonate which gives shiny white finish.