Chemistry Mock Test series:2

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1. 
Heavy water is used as a coolant in nuclear reactors. Heavy water is-

2. 
The word 'Insolation' means-

3. 
The chemical used as a fixer/developer in photography-

4. 
When a helium atom loses an electron it becomes-

5. 
One of the best solutions to get rid of non-biodegradable wastes is-

6. 
The gas produced in marshy places due to decomposition of vegetation in-

7. 
The most common lanthanide is-

8. 
Temporary hardness of water is due to the presence of-

9. 
Breath analysers used by police to test drunken drivers works on the chemical basis of-

10. 
The gas used to extinguish fire is-

11. 
The three basic components of an atom are-

12. 
Which is the most reactive metal?

13. 
Which one of the following allotropes of the carbon is used in cutting and drilling -

14. 
In the reaction ZnO+C -> Zn+CO, 'C' acts as-

15. 
What is the chemical name of the common salt?

16. 
The first organic compound synthesized in the laboratory was-

17. 
Which one of the following gases has colour?

18. 
Which of the following is responsible for permanent hardness of water?

19. 
Which of the following metals has least melting point?

20. 
Which one of the following mixture is homogeneous?

21. 
In electro-refining, the pure metal is deposited on-

22. 
Which one of the following is responsible for blue baby syndrome?

23. 
Alcohol obtained in the saponification process is-

24. 
Most of the explosion in mines occur due to the mixing of-

25. 
Aluminium suface are often anodized. This means the deposition of a layer of-

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