Identify the viable pollutant from the following.

What is the full form of PCB(in the context of chemistry)?

Dumping of sewage sludge into the sea is preferred and beneficial over dumping them into the land. State true or false.

Pick out the method employed for destroying large amounts of industrial wastes.

Where does the ozone hole occur?

Identify the substance that is not an organic toxin.

Which of the following is a green solvent used for bleaching clothes?

Water should be tested for fluoride ion concentration for drinking purposes.