Which element is found highest in earth crust?

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

   A. 23 %
   B. 2.3 %
   C. 17 %
   D. 1.7 %

   Submitted by: Shafiq Rehman

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

   A. 64 %
   B. 79 %
   C. 75 %
   D. 73 %

   Submitted by: Shafiq Rehman

6. 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

7. The seventieth element included in the list of essential nutrient element is:__________?

   A. Vanadium
   B. Cobalt
   C. Sodium
   D. Nickle

   Submitted by: Shafiq Rehman

8. Which element can be fixed by smecitite___________________?

   A. Mgº
   B. Kº
   C. NH2
   D. Both b & c

9. The nutrient element silicon (Si) is:_________?

   A. Beneficial
   B. Harmful
   C. Both a and b
   D. None of the above

   Submitted by: Shafiq Rehman

10. Essentiality criteria of an element :

    A. In the absence of an element, its not possible for plant to complete its vegetative cycle.
    B. The role played by an element is specific & can not be replaced by another element.
    C. The element is directly involved in the nutrition of the plant.
    D. All of these

    Submitted by: Shafiq Rehman