1. dehydration of alcohols with sulphuric acid yields

2. Pure water has the taste

3. Plants mainly composed of

5. the atmosphere contains almost the oxygen

6. Deficiency of vitamin A causes

7. Vitamin D is Found in

8. The colour of potassium dichromate salt is

9. the Number of essential amino acids are

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

11. Petroleum is refined by the technique of

12. the hard water contains the bicarbonates and sulphates of

13. the important source of organic compounds is

14. Major compound present in natural gas is

15. Methane gas is used in preparation of

16. Most chemical reactions show

17. Fats perform the function of

18. the largest fresh water source of earth is

19. Solvation is the process that makes

20. pressure of system effects the equilibrium of

21. the Major fraction in the CNG is