The detention period in coagulation tanks is usually kept as_______________?

Related Mcqs:

Alkalinity in water is expressed as milli-grams per litre in terms of equivalent_______________?

A. calcium carbonate B. magnesium carbonate C. sodium carbonate D. calcium hydroxide...

The time of concentration is defined as_______________?

A. the time taken by rainfall water to run from most distant point of water shed to the inlet of sewer B. the time required for flow of water in sewer to the point under consideration C. sum of (A) and (B) D. difference of (A) and (B)...

Sludge volume index is defined as the ratio of_______________?

A. percentage of sludge by volume to percentage of suspended solids by weight B. percentage of sludge by volume to percentage of total solids by weight C. percentage of suspended solids by weight to percentage of sludge by volume D. percentage of total solids by weight to percentage of sludge by volume...

The layout of distribution system in which water flows towards the outer periphery is_________________?

A. ring system B. dead end system C. radial system D. grid iron system...

The maximum discharge of a tube-well is about_________________?

A. 5 litres/sec B. 50 litres/sec C. 500 litres/sec D. 1000 litres/see...