The most suitable chemical which can be applied to the water surface for reducing evaporation is________________?

Related Mcqs:

The uplift pressure on the face of a drainage gallery in a dam is taken as_________________?

A. hydrostatic pressure at toe B. average of hydrostatic pressure at toe and heel C. two-third of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel D. none of the above...

The meander pattern of a river is developed by_________________?

A. average discharge B. dominant discharge C. maximum discharge D. critical discharge...

Which of the following canal outlets maintains a constant discharge ?

A. non-modular outlet B. flexible outlet C. rigid module D. none of the above...

Seepage through embankments in an earthen dam is controlled by_______________?

A. drainage filters B. relief wells C. drain trenches D. provision of downstream berms...

Instantaneous unit hydrograph is a hydrograph of________________?

1) unit duration 2) unit rainfall excess 3) infinitely small duration 4) infinitely small rainfall excess The correct answer is? A. (1) and (2) B. (1)and(4) C. (2) and (3) D. (3) and (4)...