Chemistry Mock Test series:2

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1. 
Which one of the following is responsible for blue baby syndrome?

2. 
When a helium atom loses an electron it becomes-

3. 
Which of the following metals has least melting point?

4. 
Most of the explosion in mines occur due to the mixing of-

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

6. 
The three basic components of an atom are-

7. 
Which one of the following allotropes of the carbon is used in cutting and drilling -

8. 
The chemical used as a fixer/developer in photography-

9. 
Which one of the following mixture is homogeneous?

10. 
Aluminium suface are often anodized. This means the deposition of a layer of-

11. 
The most common lanthanide is-

12. 
What is the chemical name of the common salt?

13. 
Alcohol obtained in the saponification process is-

14. 
The first organic compound synthesized in the laboratory was-

15. 
In electro-refining, the pure metal is deposited on-

16. 
Which of the following is responsible for permanent hardness of water?

17. 
Which is the most reactive metal?

18. 
The word 'Insolation' means-

19. 
The gas used to extinguish fire is-

20. 
The gas produced in marshy places due to decomposition of vegetation in-

21. 
Temporary hardness of water is due to the presence of-

22. 
Which one of the following gases has colour?

23. 
Heavy water is used as a coolant in nuclear reactors. Heavy water is-

24. 
In the reaction ZnO+C -> Zn+CO, 'C' acts as-

25. 
Breath analysers used by police to test drunken drivers works on the chemical basis of-

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