The oxygen concentration in the air is________________?

Related Mcqs:

1. Primary air polluted is________________?

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

2. The transport of a substance across a biological membrane against a concentration gradient is called___________________?

   A. Passive transport
   B. Active transport
   C. Absorption
   D. Dissolution

3. The negative logarithm of the hydrogen ion concentration, a measure of the acidity of a solution is called_______________?

   A. pH
   B. EC
   C. Cl
   D. Saliruiy

4. Recommended method for cotton sowing is________________?

   A. Broad cast method
   B. Drill method
   C. Ridge sowing method
   D. non of these

5. Critical factors for crop production is________________?

   A. Land
   B. Water
   C. Pure seed
   D. fertilizer

6. Soil reaction of preference of sugarcane is________________?

   A. 6.00 pH
   B. 7.03 pH
   C. 8.00 pH
   D. 6.5 pH

7. The major source of foreign exchange earning is________________?

   A. Wheat
   B. Sugarcane
   C. Cotton
   D. Jute

8. Gassypium hirsutum is________________?

   A. Tetraploid
   B. Diploid
   C. Triploid
   D. Hexaploid

9. Seed rate of cotton per acre is________________?

   A. 10-22 kg
   B. 5-6 kg
   C. 14-21 kg

10. Delta of water for cotton crop is________________?

    A. 30 acre inches
    B. 25 acre inches
    C. 18 acre inches
    D. non of these