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

Related Mcqs:

1. Most abundant mineral in the earth crust is______________________?

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

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

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

3. 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...

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. After self pollination of red flowered plants out of 40 plants of progeny were white flowered. this indicates that the plants are__________________?

   A. Heterogeneous B. Heterozygous C. Homogenous D. Homozygous...

8. The deficient level of N (%) in plants suggested by various workers is____________________?

   A. 0% B. 3% C. 5% D. 10%...

9. An atmosphere with reduced concentration of O2 and increased concentration of CO2 is called_______________?

   A. Refrigeration B. Oxidation C. Humidity control D. Controlled atmosphere...

10. The most highly advanced division in plants kingdom is____________________?

    A. Pteridophtes B. Tracheophyta C. Taxonomy D. None of the above...