Name the following :

(a) The solid precipitated material produced during secondary treatment of the effluent, carried out in the Effluent Treatment Plants.

(b) The two types of devices commonly used for removing the particulate air pollutants.

(c) The process of disposal of waste by burning.

(d) The solid waste residue left after burning.

(e) The category of wastes given out from homes.

Correct the following statements by changing the first/last word only.

(a) Some of the electronic wastes may contain valuable metals such as potassium.

(b) Sludge is the gaseous waste of cement industry.

(c) Drains are used to remove gaseous and particulate air pollutants.

(d) Industrial liquid waste is termed as sewage.

(e) Rags are the plant residue left after extracting the sugarcane juice.

Define the terms:

(a) Waste

(b) Fly ash

(c) E-wastes

(d) Composting

(e) Mine tailing

Give reasons for the following:

(a) Broken glass utensils are a kind of non-degradable waste.

(b) Landfills are coming up fast near large cities.

(c) Why is municipal sewage first separated into degradable and non-degradable wastes?