Environmental Engineering MCQs

A. at a distance R from the well

B. close to the well

C. at a distance R/2 from the well

D. none of the above

A. lesser value

B. higher value

C. same value

D. accurate value

A. sludge digestion

B. sludge disposal

C. sedimentation

D. filtration

A. it is unsuitable for turbid and acidic water

B. huge amount of precipitate is formed which creates a disposal problem

C. the effluent cannot be reduced to zero hardness

D. it is unsuitable for softening the water of excessive hardness

A. 1 minute

B. 5 minutes

C. 2-4 hours

D. 12 hours

A. circular sewer

B. egg shaped sewer

C. horse-shoe type sewer

D. semi-elliptical sewer

A. 1

B. 100

C. infinite

D. zero

A. circular brick sewer

B. circular cast iron sewer

C. semi-elliptical sewer

D. horse-shoe type sewer

A. 5 litres/sec

B. 50 litres/sec

C. 500 litres/sec

D. 1000 litres/see

A. air relief valve

B. reflux valve

C. pressure relief valve

D. sluice valve