Acid soils of the world’s arable comprise up to_____________________?

Related Mcqs:

1. Although some acid soils do exist in the northern mountainous regions of Pakistan (Mansehra, Sawat, Dir). Almost all cultivated soils of the country are ________________, with high base saturation and low organic matter content (generally less than 1%)?

   A. Alkaline B. Very much acidic C. Calcareous D. both A & C Submitted by: Shafiq Rehman...

2. Esterases, proteinases, alkali acid phosphates belongs to_____________________?

   A. Hydrolases enzyme B. Transferases enzyme C. Oxireductases enzyme D. Ligases enzyme...

3. Soils that have more than 20% organic matter are termed as organic soils. These are also called:________?

   A. Peat soil B. solonchalk soil C. Muck soil D. Both a and c Submitted by: Shafiq Rehman...

4. Organic Soils are classified as ____________ and are also known as ____________ soils:

   A. Alfisols. fine & coarse textured B. Histosols, peat & muck C. Ultisols, Fe & Al rich D. None of the above Submitted by: Shafiq Rehman...

5. Organic matter decomposes rapidly in Pakistani soils because of ____________ conditions, that is why our soils generally have < 1% organic matter:

   A. High temperature B. Alkaline C. Both a & b D. None of a & b Submitted by: Shafiq Rehman...

6. The forest soils have lower bulk density than agricultural soils because of their ______ content.

   A. High organic matter B. Low organic matter C. Both a & b D. None of these Submitted by: Adnan...

7. _________is probably the most important growth limiting factor in acid soils especially those having pH below 5.0-5.5?

   A. Nitrogen B. Potassium C. Aluminium D. Calcium Submitted by: Shafiq Rehman...

8. The function of acids in food is to_____________________?

   A. Intensity & modified the taste B. Act as ciectton pair accpot C. Act as microbial inhibitor D. All the above...

9. The nucleic acids comprise of_________________?

   A. DNA B. RNA C. DNA & RNA D. DNQA and protein...

10. Oxygen and Silicon together comprise approximately ______ %of the earth crust?

    A. 64 % B. 79 % C. 75 % D. 73 % Submitted by: Shafiq Rehman...