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

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. In Pakistan about ________ area is arid or semi arid and agriculture is not possible without irrigation:

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

3. Shifting cultivation by man causes is / are:

   A. Loss of valuable forested land, which is brought under a totally unproductive use
   B. Loss of valuable timber
   C. Accelerated erosion and other related features
   D. All of the above

4. What is the best pH of soil for cultivation?

   A. 3.8-5.4
   B. 6.5-7.5
   C. 4.5-8.5`
   D. 5.5-6.5

5. The most common method used for cultivation on hills:

   A. Levelling
   B. Ridge terracing
   C. Bench terracing
   D. Channel terracing

6. Reclamation of dry sites without irrigation is / are:

   A. General considerations
   B. Species for dry zone reclamation
   C. Site preparation
   D. None of these

7. Dams and canal networks developed for irrigation purposes in Pakistan and may other countries create the problem of:

   A. Salinity and soil erosion
   B. Soil depletion and water logging
   C. Salinity and water logging
   D. Soil erosion and depletion

8. Prolonged liberal irrigation of agricultural fields is likely to create the problem of:

   A. Acidity
   B. Metal toxicity
   C. Aridity
   D. Salinity

9. With the construction of Thal irrigation canal, about _____ sand dunes have been converted into highly productive cultivated areas:

   A. 1 m ha
   B. 2 m ha
   C. 3 m ha
   D. 4 m ha

10. Kohistan ranges cover about ________ million ha.

    A. 2.3 million
    B. 2.4 million
    C. 2.5 million
    D. 2.6 million