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Railways PYQCBT 1 2016

RRB NTPC · Question 45

What does SPM in the environment mean? A. Suspended Pollution Mark B. Suspended Particulate Matter C. Suspended Particle Mode D. Suspended Particle Management.

  1. C

  2. B

  3. A

  4. D

Show answer & explanation

Answer: (B) B

Explanation

SPM stands for Suspended Particulate Matter: tiny solid or liquid particles (dust, smoke, soot) suspended in the air. Fine particles such as PM2.5 and PM10 are major air pollutants harmful to the lungs.