1
IIT-JEE 2012 Paper 1 Offline
MCQ (More than One Correct Answer)
+2
-0.5
Choose the correct reason for the stability of the Iyophobic colloidal particles
A
Preferential adsorption of ions on their surface from the solution
B
Preferential adsorption of solvent on their surface from the solution
C
Attraction between different particles having opposite charges on their surface
D
Potential difference between the fixed layer and the diffused layer of opposite charges around the colloidal particles.
2
IIT-JEE 2011 Paper 1 Offline
MCQ (More than One Correct Answer)
+2
-0.5
The correct statement(s) pertaining to the adsorption of a gas on a solid surface is (are)
A
Adsorption is always exothermic
B
Physisorption may transform into chemisorption at high temperature
C
Physisorption increases with increasing temperature but chemisorption decreases with increasing temperature
D
Chemisorption is more exothermic than physisorption, however it is very slow due to higher energy of activation
3
IIT-JEE 2009 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2

The correct statement(s) regarding defects in solids is (are)

A
Frenkel defect is usually favoured by a very small difference in the sizes of cation and anion.
B
Frenkel defect is a dislocation defect.
C
Trapping of an electron in the lattice leads to the formation of F-centre.
D
Schottky defects have no effect on the physical properties of solids.
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