Nitrosomonas  and nitrobacter are together as called_____________?

Related Mcqs:

1. The horizons O, A, E and B (other than r and C) are collectively called_____________?

   A. Regolith
   B. Solum
   C. Outer core
   D. inner core

   Submitted by: Shafiq Rehman

2. Which one of the following is physical property of soil______________________?

   A. Hydration
   B. Oxidation
   C. Reduction
   D. None of the above

3. Rhyolite in nature is______________________?

   A. Acidic
   B. Basic
   C. Both a & b
   D. None of the above

4. Microorganisms have C/N ratio of____________________?

   A. 2:1
   B. 4:1
   C. 12:1
   D. 20:1

5. Which one of the following techniques is used for assessing available P in soil and does not include growing plants:

   A. E-Value
   B. L-Value
   C. a-Value
   D. A-Value

   Submitted by: Shafiq Rehman

6. following are types of weathering:

   A. Geo chemical weathering
   B. Judo weathering
   C. Pedo chemical weathering
   D. both a and c

   Submitted by: Shafiq Rehman

7. Weathering is the natural process of__________?

   A. Disintegration
   B. Sedimentation
   C. Decomposition
   D. both A & C

   Submitted by: Shafiq Rehman

8. In Pakistan, The following igneous rocks are found over considerable areas:

   A. Marl, gypsum
   B. Slate, Shist
   C. Dolomite shale, gneiss
   D. None of the above

   Submitted by: Shafiq Rehman

9. In cotton, zn deficiency is known as_________?

   A. Fern leaf
   B. Mottle leaf
   C. Little leaf
   D. None of these

   Submitted by: Shafiq Rehman

10. Which chemical used to prevent evaporation from surface of water in water bodies?

    A. Cetyle alcohol
    B. Methyle alcohol
    C. both A and B
    D. None of these

    Submitted by: Shafiq Rehman