The pesticide used in the foundations of buildings for preventing termite attack is:

In coal-fired power plants,electrostatic precipitators are installed to control the emission of........

Which chemical compound caused the death of thousands of people in the Bhopal gas tragedy?

Limit of $BOD$ prescribed by the Central Pollution Control Board $(CPCB)$ for the discharge of industrial and municipal wastewater into natural surface water is

$A$: Water hyacinth is one of the most invasive weeds.
$R$: It increases the dissolved oxygen of water.

According to the Central Pollution Control Board $(CPCB)$,particles that are responsible for causing great harm to human health are of diameter