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: ________ .