The CO, content of air is___________________?

Related Mcqs:

1. In rice, high silicon content, in shoot confers resistance to_________________?

   A. Leaf borer
   B. Stem borer
   C. Root borer
   D. All the above

2. Hot with a cool winter is___________________?

   A. Temperature
   B. Arid
   C. Subtropical
   D. None of the above

3. AZR1 is___________________?

   A. Arid zone research institute
   B. Agriculture zonal research institute
   C. Attock Zonal research institute
   D. None of the above

4. Genus of cotton is___________________?

   A. Hirsutum
   B. Triticum
   C. Gassypium
   D. Hordeunt

5. Total cropped area of Sindh is___________________?

   A. 2.8 million hac
   B. 3.75 million hac
   C. 4.00 million hac
   D. 4.5 million hac

6. the layer of atmosphere which blocks ultraviolet radiation from sun is___________________?

   A. Stratosphere
   B. Ozone
   C. Ozosphere
   D. All the above

7. The actual amount H2O present in the air is called_____________?

   A. Relative humidity
   B. Absolute humidity
   C. Both A and B
   D. non of these

8. Primary air polluted is________________?

   A. SO₂
   B. SO₃
   C. SO₄
   D. None

9. Air contains___________________?

   A. 70% nitrogen
   B. 50% nitrogen
   C. 78% nitrogen
   D. None of the above

10. The oxygen concentration in the air is________________?

    A. 30%
    B. 21%
    C. 16%
    D. 45%