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Environmental Issues — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYEnvironmental Issues1 Mark
MCQ
According to the Central Pollution Control Board, particles that are responsible for causing great harm to human health are of diameter:
  • ✓
    $2.50$ micrometers.
  • B
    $5.00$ micrometers.
  • C
    $10.00$ micrometers.
  • D
    $7.5$ micrometers.
✓

Answer

Correct option: A.
$2.50$ micrometers.
According to $\ce{CPCB} ($Central Pollution Control Board$)$ particulate size $2.5$ micrometer or less in diameter $(\ce{PM} \ 2.5)$ are responsible for causing the greatest harm to human health.

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