Tuesday, September 8, 2009

IIT-JEE-Chemistry - Final Revision Set 6

1.Colloids and crystalloids differ in -------

a. charge on particle
b. particle nature
c. particle size
d. concentration

2. which one of the following does not form lyophilic sol?

a. gum
b. starch
c. As2S3
d. gelatin

3. The half life of a radioactive isotope is 50 minutes. Its decay constant is ___.

4. The compound H4SiO4 represents

a. silicate
b. silicic acid
c. orthosilisic acid
d. orthosilicate

5. On treatment with cold hydroiodic acid, diethyl ether gives: ________ .

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