Some reactions of $NO _2$ relevant to photochemical smog formation are
Identify $A , B , X$ and $Y$
Let $ P_n = \alpha^n + \beta^n $, $ n \in \mathbb{N} $. If $ P_{10} = 123,\ P_9 = 76,\ P_8 = 47 $ and $ P_1 = 1 $, then the quadratic equation having roots $ \alpha $ and $ \frac{1}{\beta} $ is:
There is a number of factors that contribute to the pollution of the environment. Some of the major causes of atmospheric pollution are given below -