1. the atmosphere contains almost the oxygen

2. Vitamin D is Found in

3. pressure of system effects the equilibrium of

4. the largest fresh water source of earth is

5. Plants mainly composed of

7. the Major fraction in the CNG is

8. Most chemical reactions show

9. Methane gas is used in preparation of

10. the hard water contains the bicarbonates and sulphates of

11. Solvation is the process that makes

12. Deficiency of vitamin A causes

13. the important source of organic compounds is

14. Petroleum is refined by the technique of

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

16. The colour of potassium dichromate salt is

17. Fats perform the function of

18. dehydration of alcohols with sulphuric acid yields

19. the Number of essential amino acids are

20. Pure water has the taste

21. Major compound present in natural gas is