Source of negative charges on silicate clays is/ are________?

Related Mcqs:

1. Accumulation of Al and Fe oxides and clays coming from the upper profile layers:

   A. Zone of eluviation
   B. Zone of Illuviation
   C. Zone of evaluation
   D. None of the above

   Submitted by: Shafiq Rehman

2. Soil order characterized by excess of weathering with dominant iron and aluminium oxide clays, common in tropics is_________?

   A. Alfisols
   B. Mollisols
   C. Entisols
   D. Oxisols

   Submitted by: Shafiq Rehman

3. swelling clay soils, develop cracks due to greater proportion of swelling type clays:

   A. Alfisols
   B. Ultisols
   C. Vertisols
   D. None of the above

   Submitted by: Shafiq Rehman

4. The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?

   A. 3-15 meq/100g CEC
   B. 40 meq/100g CEC
   C. 50 meq/100g CEC
   D. None of the above

5. There are twelve soil orders found in the world of which six soil orders have been recognized at various locations are________?

   A. Andisols, Gelisols, Histosols, Spodosols, Oxisols, Ultisols
   B. Entisols, Inceptisols, Aridisols, Alfisols, Mollisols, Vertisols
   C. Andisols, Aridisols, Histosols, Vertisols, Regosols, Libosols
   D. The above statement is wrong

   Submitted by: Shafiq Rehman

6. Common and easily available source of energy does not contain RNA__________________?

   A. DNA
   B. RNA
   C. ATP
   D. DNA/RNA

7. Norine 10 is the source of dwarfing gene in________________?

   A. Wheat
   B. Rice
   C. Barley
   D. Oat

8. capsicum is a rich source of___________________?

   A. Vitamin A
   B. Vitamin C
   C. Vitamin D
   D. None of the above

9. Fruits are an excellent source of_____________________?

   A. Vitamins
   B. Minerals
   C. Carbohydrates
   D. All the above

10. Fly larvae (maggots) move away from a bright source of light. This is an example of a ___________?

    A. Taxis
    B. Reflex (involuntary movement)
    C. Kinesis
    D. Transverse orientation (Keeping a fix angle on a distance)

    Submitted by: Muhammad Amjad