The total dissolved solids in drinking water should not exceed_________________?

Related Mcqs:

1. The percentage of the volume of water filled in voids to the total volume of solids of soil grains is called__________________?

   A. Void ratio
   B. Degree of compaction
   C. Degree of saturation
   D. Volume of saturation

2. Art of making saline water fit for irrigation and drinking through the processes of membrane technique and reverse osmosis is called ___________________?

   A. Desalinization
   B. Water application
   C. Water mixing
   D. All are correct

3. The field capacity is the water retained by a saturated soil after free drainage of surplus water to the ground water table but the water retained by a saturated soil after being centrifuged by a centrifugal force of 1000 times that of gravity is called________________?

   A. Soil moisture
   B. Equivalent moisture
   C. Field moisture
   D. Available moisture

4. A water rise takes place on down stream of sloping glacis, when a stream of water moving with high velocity and low depth strikes another stream of flow moving with low velocity and high depth, such breakage in water surface is called______________?

   A. Water wave
   B. Water tide
   C. Hydraulic jump
   D. Afflux

5. A water pool is designed on the down stream of the hydraulic structure to dissipate the energy of falling water by providing a water cushion called ______________________?

   A. Water pool
   B. Cistern
   C. Down stream pond
   D. Water cushion

6. The water evaporates from paddy surfaces to the atmosphere in the form of water vapours, these water vapours get collected in the atmosphere and behave & like_________________?

   A. Water
   B. Snow
   C. Ice particles
   D. Gas

7. Water logging caused by ____________ water, which during excessive irrigation percolates down and join under ground water table?

   A. Capillary
   B. Hygroscopic
   C. Gravity
   D. Free

8. A flow of water for a certain discharge when total energy of flow i.e. sum of potential, kinetic and pressure energies is minimum is called_______________________?

   A. Shooting flow
   B. Critical flow
   C. Sub-critical flow
   D. Normal flow

9. _________% of total global water is fresh and its major portion is obtained from Rains ?

   A. 2%
   B. 2.5%
   C. 3%
   D. 3.2%

10. The delta the total depth of water consumed by crop up to its maturity, the delta of cotton is ____________________?

    A. 100 cm
    B. 80 cm
    C. 50 cm
    D. 40 cm