Potassium (K) occurs as a constituent of the earth’s crust in the proportion of_________?

Related Mcqs:

1. Fine-graned rocks formed on earth crust are called____________________?

   A. Intensive igneous rock B. Extrusive rock C. Sedimentary rock D. Plutonic...

2. Most abundant mineral in the earth crust is______________________?

   A. N-Feldspar B. Feldspar C. S-Feldspar D. Amplubole...

3. The most abundant metal in the earth’s crust and toxic to plants in low concentration is____________________?

   A. Mo B. Al C. Fe D. All the above...

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

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

5. The relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earth’s crust is_________?

   A. 12.5 % -12.5 % – 75% B. 64.7 % – 27.4 % – 7.9 % C. none of A & B D. 7.9% – 27.7 % – 64.4 Submitted by: Shafiq Rehman...

6. Which element is found highest in earth crust?

   A. Aluminum B. Silicon C. Sodium D. None of the above Submitted by: Shafiq Rehman...

7. International atomic weight of potassium is_________________?

   A. 39.0 B. 40.0 C. 41.0 D. 38.0...

8. Potassium (K) fixation capacity is maximum in:____________?

   A. Vermiculite B. Illite C. Montmorillonitic D. Amorphous clay Submitted by: Shafiq Rehman...

9. Phosphorus (P) is the second major nutrient essential for plant growth. With the exception of Nitrogen (N) and Potassium (K), Phosphorus is required by plants in_________?

   A. Lesser quantities B. Greater quantities C. Not required D. The above statement is wrong Submitted by: Shafiq Rehman...

10. Potassium plays a significant role in the transport of water & nutrients through the plant in the xylem. When the supply of K is reduced, the transportation of ___________________ is depressed:

    A. Nitrates, Phosphates B. Calcium, magnesium C. Amino acids D. All of the above Submitted by: Shafiq-ur-Rehman...