1000+ Environmental Engineering Questions for GATE Exam - 2

Question: 6

All major and important gravity dams are nowadays constructed with

(A) concrete

(B) earth and rock fill

(C) brick masonry

(D) stone masonry

Question: 7

A circular sewer section is preferred to because

(A) it provides maximum hydraulic mea depth

(B) it provides maximum area for a given perimeter

(C) it is cheaper in construction

(D) all the above

Question: 8

Cowl is provided at

(A) first step in manhole

(B) upper end of the manhole

(C) lower end of ventilating column

(D) upper end of ventilating column

Question: 9

The flowing river water in natural drainage gets cleaned by

(A) photosynthesis

(B) self purification

(C) oxidation

(D) none of these

Question: 10

Temporary hardness of water may be removed by

(A) De-ionization method

(B) Zeoloite process

(C) Lime soda process

(D) Boiling