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Air and Atmosphere — CHEMISTRY STD 6 — Question

ICSE BoardEnglish MediumSTD 6CHEMISTRYAir and Atmosphere1 Mark
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

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