Home PYQs UPPSC UPPSC MCQs Prelims 2017 (GS Paper I)

Question

The size of the Respirable Suspended Particulate Matter [R.S.P.M] in the air is:

  1. more than 7 µm [microne]
  2. more than 6 µm [microne]
  3. more than 5 µm [microne]
  4. less than 5 µm [microne]

Answer:

Option D: less than 5 µm [microne]

Detailed Solution:

The correct answer is “ less than 5 µm [microne]”.

Respirable Suspended Particulate Matter (RSPM) is defined as particles with a diameter less than 5 µm. These particles are small enough to be inhaled deep into the lungs and can cause serious health problems.