JEE Advanced 2017Paper 2
- Exam
- JEE Advanced
- Year
- 2017
- Paper
- Paper 2
- Subject
- Chemistry
- Chapter
- Surface Chemistry
JEE Advanced 2017 · Paper 2 · Chemistry · Surface Chemistry
The correct statement(s) about surface properties is(are)
The correct statement(s) about surface properties is(are)
Options
- ACloud is an emulsion type of colloid in which liquid is dispersed phase and gas is dispersion medium
- BAdsorption is accompanied by decrease in enthalpy and decrease in entropy of the system
- CBrownian motion of colloidal particles does not depend on the size of the particles but depends on viscosity of the solution
- DThe critical temperatures of ethane and nitrogen are 563 K and 126 K, respectively. The adsorption of ethane will be more than that of nitrogen on same amount of activated charcoal at a given temperature
Correct answer
B. Adsorption is accompanied by decrease in enthalpy and decrease in entropy of the system
Step-by-step solution
(i) Emulsion is liquid in liquid type colloid.
(ii) For adsorption, and
(iii) Smaller the size and less viscous the dispersion medium, more will be the Brownian motion.
(iv) Higher the , greater will be the extent of adsorption.