Question

Two non-metallic oxides A and B are produced by buring of fossil fuels. A pollutes both air are water. B does not cause water pollution and its presence in water is essential. It causes air pollution. Identify A and B.
A. `NO_(2),SO_(2)`
B. `SO_(2),CO`
C. `SO_(2),CO_(2)`
D. `CO_(2),NO_(2)`

Answer 1

Correct Answer - C
A can be `SO_(2)" or "NO_(2)` because they pollute air and cause acid rain to pollute water. B can be `CO_(2)` since it does not cause acid rain. Its presence in water is essential for aquatic plants. It is considered as an air pollutant as it results in global warming.