1000+ Environmental Engineering Questions for GATE Exam - 1

Question: 1

Process of killing pathogenic bacteria from water is known as

(A) sedimentation

(B) disinfection

(C) coagulation

(D) filtration

Question: 2

Bacteria that survive in the absence of oxygen are known as

(A) anaerobic bacteria

(B) aerobic bacteria

(C) facultative bacteria

(D) pathogenic bacteria

Question: 3

A pipe sunk into the well to tap underground water is called

(A) artesian well

(B) open well

(C) infiltration well

(D) tube well

Question: 4

Dry water flow in a combined sewer, is

(A) storm water

(B) inclusive of domestic and industrial sewage but excludes storm water

(C) industrial sewage

(D) domestic sewage

Question: 5

Aerosol is

(A) diffused liquid particles

(B) carbon particles of microscopic size

(C) dispersion of small solid or liquid particles in gaseous media

(D) finely divided particles of ash