Question

A. Objective type questions
Choose the correct option.
1. Which one of these is a mechanical process of treating wastewater?
(a) Screening of wastes
(c) Disinfecting water
(b) Digestion of wastes
(d) None of these
2. Which of the following removes the largest impurities of sewage?
(a) Vertical bars
(b) Grit chamber
(c) Aeration tanks
(d) Sedimentation tanks
3. Which one of these refers to the material that settles at the bottom in wastewater treatment?
(a) Sludge
(b) Scum
(c) Sewage
(d) None of these
4. In which one of these is air blown onto the sewage?
(a) Grit chambers
(b) Aeration tanks
(c) Water tank
(d) Septic tank
5. Improper management of sewage results in
(b) contamination of water supply
(d) all of these
(a) diseases
(c) water pollution
​

Answer 1

Answer:

A. (a)

B. (b)

C. (a)

D. (b)

E. (d)

Not sure about A. and B.

Answer 2

Answer:

A.a

B.b

C.a

D.b

E.d

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