Question

A house was built near a major industrial area and painted white. After the period of the rainy season, it was observed that the colour faded faster compared to a house build in an isolated village. What might be the reason behind it?

• A. Emission of gases like $N{O}_2$ and $S{O}_2$
• B. Emission of gases like $C{H}_4$ and $N{H}_3$
• C. Emission of gases like $H_2$ and $O_2$
• D. Emission of gases like $N_2$ and $O_2$

Answer 1

The correct option is A Emission of gases like $N{O}_2$ and $S{O}_2$

Non metallic oxides dissolve in water to form acid.

When nitrogen dioxide, carbon dioxide and sulphur dioxides are non metallic oxides present in the atmosphere of certain indutrial areas. These dissolve easily in rain water and cause acid rain.

Acid rain can cause the decay of concrete walls and paint finishes. Thus, a house build near to an industrial area will suffer serious damage to its structure compared to house located far away from industrial region.