Chemistry Elements of Biological importance Test Online Mcqs Preparation

Chemistry Elements of Biological importance Test Online Mcqs Preparation With Answers Start Below

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Question 1 of 15

1. The contact process was first developed by:
A.
B.
C.
D.

Question 1 of 15

Question 2 of 15

2. Nitrates from fertilizers used on farmland can cause pollution. Why do nitrates pollute rivers:
A.
B.
C.
D.

Question 2 of 15

Question 3 of 15

3. Which of the following is not primary pollutant?
A.
B.
C.
D.

Question 3 of 15

Question 4 of 15

4. Which of the following occurs in Contact process:
A.
B.
C.
D.

Question 4 of 15

Question 5 of 15

5. For plants to grow well they need soils which contain compounds of:
A.
B.
C.
D.

Question 5 of 15

Question 6 of 15

6. Sulfuric acid is not prepared by dissolving SO3 in water because:
A.
B.
C.
D.

Question 6 of 15

Question 7 of 15

7. Nitric acid is prepared commercially by:
A.
B.
C.
D.

Question 7 of 15

Question 8 of 15

8. Why do farmers and gardeners often treat soil with ammonia sulphate:
A.
B.
C.
D.

Question 8 of 15

Question 9 of 15

9. The temperature at which nitrogen oxidized to NO during HNO3 production is:
A.
B.
C.
D.

Question 9 of 15

Question 10 of 15

10. The nitrogen present in some fertilizers helps plants:
A.
B.
C.
D.

Question 10 of 15

Question 11 of 15

11. During the manufacture of ammonia by Haber’s process, a high yield is favoured by high pressure and low temperature. However, in practice, a high temperature of 450°C is employed because:
A.
B.
C.
D.

Question 11 of 15

Question 12 of 15

12. In Harber’s process maximum ammonia can be achieved by reducing temperature, but on contrary we maintain high temperature of 400°C because
A.
B.
C.
D.

Question 12 of 15

Question 13 of 15

13. In Antarctica, ozone depletion is due to the formation of compound
A.
B.
C.
D.

Question 13 of 15

Question 14 of 15

14. The steps involved in the manufacture of HNO3:
A.
B.
C.
D.

Question 14 of 15

Question 15 of 15

15. Sulphuric acid is king of chemicals, in its reactions it generally not act as
A.
B.
C.
D.

Question 15 of 15


 

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