Question

Read the following statements regarding particulate matter and select the incorrect ones.
(i) Particulate matter (PM) consists of soot, fly ash, dust, spores, pollen grains, etc.
(ii) Particulate matter is differentiated into settle able (larger than $10$ remaining in air for more than one day to several weeks) particulate matter.
(iii) SPM (suspended particulate matter) consists of aerosol, dust and mist.
(iv) Particulate matter causes respiratory diseases such as tuberculosis, allergy and many more diseases in animals and plants.
(v) According to Central Pollution Control Board (CPCB), particulate size of $2.5$ or less in diameter are responsible for causing the greatest harm to human health.

• A. (i) and (ii)
• B. (iii) and (iv)
• C. (ii) only
• D. None of these

Answer 1

Answer: (D)

None of these

In the given question, all the statements i-v are correct.

So, the correct option is 'None of these'.