The sedimentation in the most vital reservoirs of the country, the nation is losing some US $130.8 million every year due to loss of:

Related Mcqs:

1. The reservoir of Mangla is being silted at the rate of 48.27 million m3 per year and that of Tarbela at the rate of _____ million cubic meters per year:

   A. 160.5
   B. 167.75
   C. 170.6
   D. 175.8

2. Of the ________ million ha area under cultivation, 15.62 million ha area (76%) is under irrigation:

   A. 21
   B. 22
   C. 23
   D. 24

3. Which element is vital to plants and animals for the synthesis of proteins and nucleic acies?

   A. Oxygen
   B. Nitrogen
   C. Carbon
   D. None of these

4. The major floods in Pakistan have caused losses worth _____ million and are responsible for unsufficiency of food and subsequent higher import bills in the year to follow:

   A. Rs.80,000
   B. Rs.90,000
   C. Rs.75,000
   D. None of these

5. Tarbela dam is being silted at ______ acre feet per year while Mangla is being silted at a rate of _____ acre feet per year due to misuse of their watershed area:

   A. 109000, 42,000
   B. 110000, 43000
   C. 115000, 44,000
   D. None of these

6. Loss of forests, urbanization, increasing pollution are all due to:

   A. Population explosion
   B. Nitrogen di-oxide
   C. Global warming
   D. Sulphur dioxide

7. Land utilization – the country occupies an area of ____ million ha.

   A. 87.98
   B. 90.98
   C. 92.99
   D. None of these

8. Sometimes sound and uninjured seeds may fail to germinate due to reduced activity of the seed or seed parts resulting in blockade of the growth. This may be due to:

   A. External effects of environment
   B. Internal conditions within the plant itself, i.e. Embryo dormancy or seed coat dormancy
   C. Both (a) & (b)
   D. None of these

9. The unclassified area which constituted more than ____ of the total area at the time of independence, in due course of time, has dropped to the present level due to extension in the land use:

   A. 40%
   B. 50%
   C. 60%
   D. 70%

10. The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:

    A. Phosphene
    B. SiF4
    C. Dust
    D. Halogens