O Level Biology MCQs – Certification Test 692

Atmospheric Pollution Quiz (Question 692) – Learning App & e-Book Download

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MCQ 692: Sulfur dioxide (SO₂) may be reduced in air, if:

catalytic converters are used in cars
car pools are used
filters or scrubbers are used in chimneys
ozone friendly products are introduced

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O Level Biology Quiz App & e-Book – Atmospheric Pollution Study Material

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