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...