Air, Water and Soil Pollution — Prelims Questions

Which of the following is a secondary air pollutant and a major component of photochemical smog?

A water sample has a BOD of $150\,\text{mg/L}$. What does this indicate about the water quality?

Which of the following is NOT a consequence of eutrophication?

Which of the following pollutants is known to cause 'Minamata disease'?

Which of the following is a control measure for particulate matter pollution in industrial emissions?

Which of the following gases is NOT considered a major greenhouse gas?