According to Central Pollution Control Board (CPCB), particulate size _______ micrometers or less in diameter are responsible for causing the greatest harm to human health.
In all Electromagnetic waves, Gamma Rays have the highest frequency and the lowest wavelength. Whereas Radio ways have lowest Frequency and the highest wavelength.
In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.