MCQ
Air pollution is due to the
  • A
    cutting of green plants
  • B
    gases like carbon monoxide, sulphur dioxide, etc.
  • C
    smoke given out by factories
  • all of the above

Answer

Correct option: D.
all of the above

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free