The safe limit of No2 in drinking water is_____________________?

Related Mcqs:

1. Liquid food drinking is_____________________?

   A. Pinoeytosis
   B. Phagocytosis
   C. Imbibitions
   D. None of the above

2. Boron concentration is irrigation water is considered safe only upto_________________?

   A. 0.7 ppm
   B. 1.5 ppm
   C. 2 ppm
   D. 3 ppm

3. The lower limit of available water is called ____________________?

   A. Field capacity
   B. Wilting point
   C. Available water
   D. Hygroscopic water

4. The tension of the water at the upper plastic limit is equivalent to pF value:

   A. 1
   B. 2
   C. 2.5 – 3.5
   D. 0.5

   Submitted by: Shafiq Rehman

5. Main product of photosynthesis is_____________________?

   A. C6H12O6
   B. C12H24O12
   C. C3H6O6
   D. C5H12O6

6. The molar mass of NaCl is_____________________?

   A. 56.58
   B. 43.28
   C. 50.58
   D. 58.58

7. The chemical formula of Hematite is_____________________?

   A. AL (OH)2
   B. Fe2O3
   C. Fe OOH
   D. None of the above

8. The little clay mineral is_____________________?

   A. Non-expending
   B. Expending
   C. None or little expending
   D. None of the above

9. Sugar cane is_____________________?

   A. C3 plant
   B. C4 plant
   C. C2 plant
   D. None of the above

10. The exact formula for calculating the base saturation percentage is_____________________?

    A. Bas saturation percentage = CA+Mg+Na / CEC x 100
    B. Bas saturation percentage = /CEC / CA+Mg+Na x 100
    C. Bas saturation percentage = /CEC / CA+Mg x 100
    D. None of the above