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MCQ Practice

PM2.5 refers to

Subject: Biotechnology EngineeringTopic: Environmental Biotechnology

A

Mass of particles of size less than 2.5 μrn

B

Mass of particles of size greater than 2.5 μrn

C

Number of particles of size less than 2.5 μrn

D

Number of particles of size greater than 2.5 μrn

Correct Answer: C

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