1000+ Environmental Engineering Interview Questions and Answers - 2

Question: 6

Which of the following is not a man made source of radio activity in the environment?

(A) nuclear power plants

(B) nuclear explosion

(C) radioisotope production

(D) cosmic ray

Question: 7

Most significant source of methane currently is

(A) cultivation of rice

(B) waste water treatment

(C) landfills

(D) coal mining

Question: 8

Velocity control device is an essential component of

(A) grit chamber

(B) activated sludge process

(C) flow equalisation tank

(D) rapid sand filter

Question: 9

Activated sludge process is used to remove

(A) pathogenic bacte

(B) inorganic matter and toxic chemicals

(C) soluble organic matter

(D) settleable organic matter

Question: 10

The coagulant which is generally not used for treating the sewage is

(A) alum

(B) ferric sulfate

(C) chlorinated coppers

(D) ferric chloride