JEE Main On 8 April 2017 Question 20
Question: Among the following, correct statement is : [JEE Online 08-04-2017]
Options:
A) Sols of metal sulphides are lyophilic.
B) Brownian movement is more pronounced for smaller particles than for bigger-particles
C) One would expect charcoal to adsorb chlorine more than hydrogen sulphide.
D) Hardy Schulze law states that bigger the size of the ion is, the greater is its coagulating power.
Show Answer
Answer:
Correct Answer: C
Solution:
One would expect charcoal to adsorb chlorine less than hydrogen sulphide.
Easily liquefiable gases are readily adsorbed than gases which do not liquefy easily. Easily liquefiable gases have higher critical temperature and stronger Vander Waals forces of attraction.
Brownian movement is more pronounced for smaller particles than for bigger-particles.
The speed of moving particles is inversely proportional to the size of the particles. Higher is the size, lower is the speed.
Hardy Schulze law states that bigger the charge of the ions, the greater is its coagulating power.
Sols of metal sulphides are lyophobic.
