Only _____% of the total amount of fresh water is stored in lakes, reservoirs & rivers:

Related Mcqs:

1. The maximum amount of water which a soil can hold after free drainage has ceased is called as_______?

   A. Water potencial
   B. Water use efficiency
   C. Water harvesting
   D. Water holding capacity

   Submitted by: Shafiq Rehman

2. Many plant species need very large amount of water. They are: ___________?

   A. Hydrophytes
   B. Hygrophytes
   C. Both a & b
   D. None of these

   Submitted by: Shafiq-ur-Rehman

3. The amount of water that can be absorbed by an oven dry soil at 105•c when it is exposed to an atmosphere of 100% relative humidity is called:

   A. Field Capacity (FC)
   B. Maximum water holding capacity
   C. Hygroscopic coefficient
   D. Permanent wilting point

   Submitted by: Shafiq-ur-Rehman

4. According to one estimate, wind and water erosion over ______ % of the Pakistan’s total area?

   A. 46%
   B. 36%
   C. 76%
   D. None of the above

   Submitted by: Shafiq Rehman

5. Sewage water consists of water and solids in the following percentage___________________?

   A. 99 & 1
   B. 90 & 10
   C. 80 & 20
   D. None of the above

6. Water occupied the larger soil pores and moves down readily under the force of gravity. Water in excess of the field capacity is termed:

   A. Capillary water
   B. Hygroscopic water
   C. Gravitational water
   D. None of the above

   Submitted by: Shafiq Rehman

7. Which chemical used to prevent evaporation from surface of water in water bodies?

   A. Cetyle alcohol
   B. Methyle alcohol
   C. both A and B
   D. None of these

   Submitted by: Shafiq Rehman

8. Which chemical used to prevent evaporation from surface of water in water bodies?

   A. Cetyle alcohol
   B. Methyle alcohol
   C. both A and B
   D. None of these

   Submitted by: Shafiq Rehman

9. Water is the major constituent of all living creatures. Biomass of plants is composed of ________% water:

   A. 65 – 75%
   B. 72 – 62%
   C. 85 – 95%
   D. 75% – 80%

   Submitted by: Shafiq Rehman

10. Nitrogen & sulphur dioxide liberate from motor vehicles & industries. Nitrogen & Sulphur gases dissolve in the water vapour of atmosphere & form nitric & sulphuric acid. This rain water falls on soil as__________ & contaminates soil also:

    A. Acid rain
    B. Neutral rain
    C. Both A & B
    D. None of the above

    Submitted by: Shafiq Rehman