JEE-ADVANCED SERIES Chemistry
Surface Chemistry
11 previous year questions.
Volume: 11 Ques
Yield: Medium
High-Yield Trend
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2024 2
2022 1
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2002 1
1984 Chapter Questions 11 MCQs
01
PYQ 1984
medium
chemistry ID: jee-adva
The radiation from a naturally occurring radioactive substance, as seen after deflection by a magnet in one direction, are
1
definitely alpha rays
2
definitely beta rays
3
both alpha and beta rays
4
either alpha rays or beta rays
02
PYQ 2002
medium
chemistry ID: jee-adva
When the temperature is increased, surface tension of water
1
increases
2
decreases
3
remains constant
4
shows irregular behaviour
03
PYQ 2003
easy
chemistry ID: jee-adva
Rate of physical adsorption increases with
1
decrease in pressure
2
increase in temperature
3
decrease in surface area
4
decrease in temperature
04
PYQ 2004
medium
chemistry ID: jee-adva
Spontaneous adsorption of a gas on solid surface is an exothermic process, because
1
H increases for system
2
S increases for gas
3
S decreases for gas
4
G increases for gas
05
PYQ 2005
medium
chemistry ID: jee-adva
Lyophilic sols are
1
irreversible sols
2
prepared from inorganic compounds
3
coagulated by adding electrolytes
4
self-stabilising
06
PYQ 2008
medium
chemistry ID: jee-adva
Among the following surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient conditions is
1
2
3
4
07
PYQ 2011
medium
chemistry ID: jee-adva
The correct statement(s) pertaining to the adsorption of a gas on a solid surface is (are)
1
Adsorption is always exothermic
2
Physisorption may transform into chemisorption at high temperature
3
Physisorption increases with increasing temperature but chemisorption decreases with increasing temperature
4
Chemisorption is more exothermic than physisorption. however it is very slow due to higher energy of activation
08
PYQ 2012
medium
chemistry ID: jee-adva
Choose the correct reason(s) for the stability of the lyophobic colloidal particles.
1
Preferential adsorption of ions on their surface from the solution
2
Preferential adsorption of solvent on their surface from the solution
3
Attraction between different particles having opposite charges on their surface
4
Potential difference between the fixed layer and the diffused layer of opposite charges around the colloidal particles
09
PYQ 2022
medium
chemistry ID: jee-adva
The correct option(s) related to adsorption processes is(are)
1
Chemisorption results in a unimolecular layer.
2
The enthalpy change during physisorption is in the range of 100 to .
3
Chemisorption is an endothermic process.
4
Lowering the temperature favors physisorption processes.
10
PYQ 2022
medium
chemistry ID: jee-adva
The correct option(s) related to adsorption processes is(are)
1
Chemisorption results in a unimolecular layer.
2
The enthalpy change during physisorption is in the range of 100 to .
3
Chemisorption is an endothermic process.
4
Lowering the temperature favors physisorption processes.
11
PYQ 2024
medium
chemistry ID: jee-adva
To form a complete monolayer of acetic acid on 1g of charcoal, 100 mL of 0.5M acetic acid was used. Some of the acetic acid remained unadsorbed. To neutralize the unadsorbed acetic acid, 40 mL of 1M NaOH solution was required. If each molecule of acetic acid occupies P x 10−23 m2 surface area on charcoal, the value of P is _____.
[Use given data: Surface area of charcoal = 1.5 x 102 m2g−1 ; Avogadro’s number (NA) = 6.0 x 1023 mol−1 ]
[Use given data: Surface area of charcoal = 1.5 x 102 m2g−1 ; Avogadro’s number (NA) = 6.0 x 1023 mol−1 ]