1. the hard water contains the bicarbonates and sulphates of

2. Deficiency of vitamin A causes

3. dehydration of alcohols with sulphuric acid yields

4. the Number of essential amino acids are

5. Pure water has the taste

6. Plants mainly composed of

7. Fats perform the function of

8. the important source of organic compounds is

9. Major compound present in natural gas is

11. the largest fresh water source of earth is

12. Solvation is the process that makes

13. Vitamin D is Found in

14. Most chemical reactions show

15. the Major fraction in the CNG is

16. Petroleum is refined by the technique of

17. The colour of potassium dichromate salt is

18. pressure of system effects the equilibrium of

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

20. the atmosphere contains almost the oxygen

21. Methane gas is used in preparation of