Question

Match the items in Column A with those Column B.

Answer 1

So the correct answer is 'A-4, B-3, C-2, D-1'.

A. Cow dung and vegetable peels	4. Compost (they make excellent compost and can recycle the nutrients back to soil)
B. $S{O}_2$ and metal fumes	3. Wet scrubbers (air pollution control devices, remove these fumes)
C. Mine tailing	2. Mining waste (harmful and huge amounts of waste are generated
D. Particulate matter pollutants	1. Electrostatic precipitators (these remove the particulate matters by interacting them with electrostatic charges and filtering the air).