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1
JEE Advanced 2021 Paper 1 Online
MCQ (More than One Correct Answer)
+4
-2
Change Language
The correct statement(s) related to colloids is (are)
A
The process of precipitating colloidal sol by an electrolyte is called peptization.
B
Colloidal solution freezes at higher temperature than the true solution at the same concentration.
C
Surfactants form micelle above critical micelle concentration (CMC). CMC depends on temperature.
D
Micelles are macromolecular colloids.
2
JEE Advanced 2017 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
Change Language
The correct statement(s) about surface properties is (are)
A
Adsorption is accompanied by decrease in ethalpy and decrease in entropy of the system
B
The 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
C
Cloud is an emulsion type of colloid in which liquid is dispersed phase and gas is dispersion medium
D
Brownian motion of colloidal particles does not depend on the size of the particles but depends on viscosity of the solution
3
JEE Advanced 2015 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2
When O2 is adsorbed on a metallic surface, electron transfer occurs from the metal to O2. The true statement(s) regarding this adsorption is(are)
A
O2 is physisorbed
B
Heat is released
C
Occupancy of $$\pi _{2p}^*$$ of O2 is increased
D
Bond length of O2 is increased
4
IIT-JEE 2012 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2

The given graphs/data I, II, III and IV represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice(s) about I, II, III and IV is(are) correct?

IIT-JEE 2012 Paper 2 Offline Chemistry - Surface Chemistry Question 10 English 1

IIT-JEE 2012 Paper 2 Offline Chemistry - Surface Chemistry Question 10 English 2

IIT-JEE 2012 Paper 2 Offline Chemistry - Surface Chemistry Question 10 English 3

IIT-JEE 2012 Paper 2 Offline Chemistry - Surface Chemistry Question 10 English 4

A
I is physisorption and II is chemisorption.
B
I is physisorption and III is chemisorption.
C
IV is chemisorption and II is chemisorption.
D
IV is chemisorption and III is chemisorption.
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