Primary air pollution is____________________?

Related Mcqs:

1. Secondary air pollution is _____________________?

   A. HNO3
   B. CO3
   C. CO2
   D. All the above

2. Effects of soil pollution may also include:___________?

   A. Pollution runs-off into rivers & kills the fish, plant & other aquatic life
   B. Crops & fodder grown on polluted soil may pass the pollutants on to the consumers
   C. Soil structure is damaged or polluted soil may no longer grow crops & fodder
   D. All of the above

   Submitted by: Shafiq Rehman

3. pH of Pakistani soils is____________________?

   A. 7.5
   B. 12
   C. 7
   D. 14

4. The factor used for conversion of P to P2O3 is____________________?

   A. o.453
   B. 0.643
   C. 0.436
   D. None of the above

5. The unit of electrical conductivity is____________________?

   A. dsm-1
   B. mmhos/m
   C. ms/cm
   D. Al the above

6. The reaction of Na2 CO3 salt is____________________?

   A. Alkaline
   B. Neutral
   C. Acidic
   D. None of the above

7. The deficient level of N (%) in plants suggested by various workers is____________________?

   A. 0%
   B. 3%
   C. 5%
   D. 10%

8. The most abundant metal in the earth’s crust and toxic to plants in low concentration is____________________?

   A. Mo
   B. Al
   C. Fe
   D. All the above

9. The maximum magnification possible within electron microscope is____________________?

   A. 2000 times
   B. 4000 times
   C. 400,000 times
   D. 200,000 times

10. System of planting banana suckers followed in Sindh is____________________?

    A. Rectangular
    B. Triangular
    C. Hexagonal
    D. Square