Which one of the following gases is released mostly from landfills in urban areas?

Which one of the following is the major cause of ozone layer degradation?

Which of the following is a major cause of air pollution ?

With reference to 'Ozone layer', which of the following statements is/are correct? 1. Ozone layer shields the surface of the earth from the ultra-violet radiations from the Sun. 2. Ozone depletion ha…

Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R). Assertion (A) : CO₂, SO, and NO, gases get dissolved in rain water and produce acid rain. Reason (R) : At…

What is the primary cause of acid rain?