Top 350+ Solved Environmental Engineering MCQ Questions Answer

a. alum

b. lime

c. copper sulphate

d. bleaching powder

e. None of the above

a. Have corrosive action on metals

b. Dissolve lead

c. Corrode iron

d. All of the above

e. None of the above

a. White

b. Black

c. Pink

d. Brown

e. Green

a. Breathing

b. Swalowing

c. Skin absorption

d. Injection

e. Any of the above

a. colourless

b. odourless

c. tasteless

d. readily soluble in water

e. None of the above

a. 3 to 6

b. 6 to 10

c. 10 to 12

d. 15 to 20

e. None of the above

a. Removing temporary hardness

b. Removing permanent hardness

c. Cent percent removal of hardness

d. Acidic waters

e. When zeolite becomes inactive, it may be reactivated by flushing with brine solution

a. Argon

b. Carbon dioxide

c. Xenon

d. Neon

e. Helium

a. Start up or idling

b. High load operating

c. High speed operation

d. All of the above

e. None of the above

a. Water is hard

b. Water is acidic

c. Water is alkaline

d. Organic matter is present in water

e. Chlorine content is high in water

a. Algae

b. Shrubs

c. Fungi

d. Any of the above

e. All of the above

a. Carbon dioxide

b. Water vapours

c. Hydrogen

d. Ozone

e. None of these

a. Lime

b. Stacked lime

c. Chloride of lime

d. Hypo-chloride of lime

e. Hypo-chlorite of lime

a. 10

b. 5

c. 3

d. 2

e. 1

a. 75.5 percent

b. 65.5 percent

c. 24.3 percent

d. 23.1 percent

e. 20.3 percent