1. dehydration of alcohols with sulphuric acid yields

2. the largest fresh water source of earth is

3. Deficiency of vitamin A causes

4. pressure of system effects the equilibrium of

6. the atmosphere contains almost the oxygen

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

8. Solvation is the process that makes

9. the hard water contains the bicarbonates and sulphates of

10. Major compound present in natural gas is

11. Petroleum is refined by the technique of

12. the Number of essential amino acids are

13. the important source of organic compounds is

14. the Major fraction in the CNG is

15. Vitamin D is Found in

16. Methane gas is used in preparation of

17. Fats perform the function of

18. The colour of potassium dichromate salt is

19. Plants mainly composed of

20. Pure water has the taste

21. Most chemical reactions show