chemistry

4. To determine calorific value of Coal, ___ calorimeter is used
6. If ___ increases, then rate of corrosion also increases
7. The electrode whose electrode potential is stable & reproducible?
8. Water purification technique which converts sea water into portable water?
9. pH = 7
12. When 2 or metals are in contact with each other, then _ cell is formed ?
16. Material having size 10–⁹ meters (10 rest to -9 meters )
17. pH > 7

1. To determine calorific value of CNG, ___ calorimeter is used
2. The material which is 200 times stronger than steel
3. __ is the destruction of metal by the environment at the surface of the metal
5. Two types of hardness of water - 1) Temporary & 2) ?
10. What makes water hard?
11. pH< 7
13. IR spectroscopy is also called as __
14. Corrosion which occurs due to atmospheric oxygen is --
15. Wet steam formation is called as ?