1. Petroleum is refined by the technique of

2. Methane gas is used in preparation of

3. A solution having Ph of 7.5 mean that it is

4. Major compound present in natural gas is

5. the Major fraction in the CNG is

6. Fats perform the function of

7. Vitamin D is Found in

8. pressure of system effects the equilibrium of

9. the Number of essential amino acids are

10. dehydration of alcohols with sulphuric acid yields

11. Pure water has the taste

12. the largest fresh water source of earth is

13. the atmosphere contains almost the oxygen

14. the important source of organic compounds is

16. Solvation is the process that makes

17. Most chemical reactions show

18. The colour of potassium dichromate salt is

19. Plants mainly composed of

20. Deficiency of vitamin A causes

21. the hard water contains the bicarbonates and sulphates of