Environmental Engineering Quiz Questions & Answers Pdf - 2

Question: 6

For controlling algae, the chemical generally used in

(A) Bleaching powder

(B) Copper sulphate

(C) Lime

(D) Alum

Question: 7

Which one of the following gases shows a different behaviour at high pressure?

(A) Ozone

(B) Hydrogen

(C) Carbon dioxide

(D) Water vapours

Question: 8

Addition to alum increases

(A) Acidity of water

(B) Sulphates in water

(C) Carbonates of water

(D) Hardness of water

Question: 9

Which of the following is a cold cathode lamp?

(A) Neon lamp

(B) Low pressure mercury vapour lamp

(C) High pressure mercury vapour lamp

(D) Sodium vapour lamp

Question: 10

The method used for the removal of fine suspended particle is

(A) Agitation

(B) Aeration

(C) Flotation

(D) Filtration