15. The stability of lyophobic sols is due to ___?
* Very short type questions -
(each questions carry one marks)
16.What is meant by desorpton?
17 What are promoters? Give an example?
18.Write Nemst equation for the following chemical reaction
2Cr + 3Fe2+ - 2073+ + 3Fe
19. Why nitrogen gas is very inreactive?
(Or)
N2 is not particularly reactive. Explain?
20. What is the covalency of nitrogen in N205?
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