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Question

Which of the following is a method specifically used to control particulate air pollution?

This question was previously asked in
RRB NTPC 2025 Under Graduate CBT 1 Question Paper PDF (20-Jun-2026) (Shift 3)
The correct answer is

Use of fabric filters to trap dust and fly ash

Fabric filters used to trap dust and fly ash are a method specifically employed to control particulate air pollution from industrial emissions.

Liquid scrubbers absorb gases, catalytic combustion treats combustible pollutants, and increasing chimney height without treatment does not control pollution.

Hence, 'Use of fabric filters to trap dust and fly ash' is the correct answer.

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