CFC is also called ____

Discharge of treated industrial sewage into water bodies causes water pollution

Which of the following is not a greenhouse gas ???

Carbon monoxide is released from the combustion of fossil fuels.

Which of the following is major source of water pollution?

A chemical method used for purifying water is :

The most widely used solvent is

Water shortages can be created by

______________________ is the process of removing the salt from ocean water.

_______ is commonly used as coolants in refrigerators.