1
IIT-JEE 2011 Paper 1 Offline
MCQ (Single Correct Answer)
+1
-0.25
Among the following compound, the most acidic is
A
p-nitrophenol
B
p-hydroxybenzoic acid
C
o-hydroxybenzoic acid
D
p-toluic acid
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 2011 Paper 1 Offline
MCQ (Single Correct Answer)
+1
-0.25
Dissolving 120 g of urea (mol. wt. 60) in 1000 g of water gave a solution of density 1.15 g/mL. The molarity of the solution is
A
1.78 M
B
2.00 M
C
2.05 M
D
2.22 M
4
IIT-JEE 2011 Paper 1 Offline
MCQ (More than One Correct Answer)
+2
-0.5
Extraction of metal from the ore cassiterite involves
A
carbon reduction of an oxide ore
B
self-reduction of a sulphide ore
C
removal of copper impurity
D
removal of iron impurity
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