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

2. the atmosphere contains almost the oxygen

4. Petroleum is refined by the technique of

5. Solvation is the process that makes

6. the important source of organic compounds is

7. the Major fraction in the CNG is

8. the hard water contains the bicarbonates and sulphates of

9. Deficiency of vitamin A causes

10. Vitamin D is Found in

11. dehydration of alcohols with sulphuric acid yields

12. the Number of essential amino acids are

13. Major compound present in natural gas is

14. Most chemical reactions show

15. Plants mainly composed of

16. The colour of potassium dichromate salt is

17. Fats perform the function of

18. the largest fresh water source of earth is

19. pressure of system effects the equilibrium of

20. Methane gas is used in preparation of

21. Pure water has the taste