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Surface Chemistry PYQs - Last 10 Years

JEE Main / Chemistry / Physical Chemistry / 106 recent questions

ChemistryPhysical Chemistry2015-2024
All Surface Chemistry PYQsLast 5 YearsCreate chapter test

Practice 106 JEE Main Chemistry questions from Surface Chemistry. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

106
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Chemistry / Physical Chemistry
2015-2024
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80
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2020-2024
106
Last 10 Years
2015-2024

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106PYQs
MCQ83%
INTEGER17%

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#1 Easy77
#2 Medium28
#3 Hard1
80 in last 5 years106 in last 10 years

Last 10 Years Surface Chemistry Questions

Showing 50 of 106 filtered questions.

1Surface Chemistry
The adsorbent used in adsorption chromatography is/are -
A. silica gel
B. alumina
C. quick lime
D. magnesia
Choose the most appropriate answer from the options given below :
MCQ+4 / -12024
2Surface Chemistry
'Adsorption' principle is used for which of the following purification method?
MCQ+4 / -12024
3Surface Chemistry
Which of the following represent the Freundlich adsorption isotherms?

Choose the correct answer from the options given below:
MCQ+4 / -12023
4Surface Chemistry
Coagulating value of the electrolytes \(\mathrm{AlCl}_{3}\) and \(\mathrm{NaCl}\) for \(\mathrm{As}_{2} \mathrm{S}_{3}\) are 0.09 and 50.04 respectively. The coagulating power of \(\mathrm{AlCl}_{3}\) is \(x\) times the coagulating power of...
INTEGER+4 / -12023
5Surface Chemistry
For the adsorption of hydrogen on platinum, the activation energy is \(30 ~\mathrm{k} ~\mathrm{J} \mathrm{mol}^{-1}\) and for the adsorption of hydrogen on nickel, the activation energy is \(41.4 ~\mathrm{k} ~\mathrm{J} \mathrm{mol}^{-1}\)....
INTEGER+4 / -12023
6Surface Chemistry
The number of colloidal systems from the following, which will have 'liquid' as the dispersion medium, is ___________.
Gem stones, paints, smoke, cheese, milk, hair cream, insecticide sprays, froth, soap lather
INTEGER+4 / -12023
7Surface Chemistry
Adding surfactants in non polar solvent, the micelles structure will look like
MCQ+4 / -12023
8Surface Chemistry
Match List I with List II

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...
MCQ+4 / -12023
9Surface Chemistry
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : In expensive scientific instruments, silica gel is kept in watch-glasses or in semipermeable membrane bags.
Reason (R...
MCQ+4 / -12023
10Surface Chemistry
The graph of $\log \frac{x}{m}$ vs $\log \mathrm{p}$ for an adsorption process is a straight line inclined at an angle of $45^{\circ}$ with intercept equal to $0.6020$. The mass of gas adsorbed per unit mass of adsorbent at the pressure of ...
INTEGER+4 / -12023
11Surface Chemistry
Which of the following salt solutions would coagulate the colloid solution formed when \(\mathrm{FeCl_3}\) is added to \(\mathrm{NaOH}\) solution, at the fastest rate?
MCQ+4 / -12023
12Surface Chemistry
Match List I and List II

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....
MCQ+4 / -12023
13Surface Chemistry
The variation of the rate of an enzyme catalyzed reaction with substrate concentration is correctly represented by graph :
MCQ+4 / -12023
14Surface Chemistry
The number of incorrect statement/s from the following is/are ___________
A. Water vapours are adsorbed by anhydrous calcium chloride.
B. There is a decrease in surface energy during adsorption.
C. As the adsorption proceeds, \(\Delta\)H be...
INTEGER+4 / -12023
15Surface Chemistry
Based on the given figure, the number of correct statement/s is/are __________.

A. Surface tension is the outcome of equal attractive and repulsive forces acting on the liquid molecule in bulk.
B. Surface tension is due to uneven forces ac...
INTEGER+4 / -12023
16Surface Chemistry
Statement I : For colloidal particles, the values of colligative properties are of small order as compared to values shown by true solutions at same concentration.
Statement II : For colloidal particles, the potential difference between the...
MCQ+4 / -12023
17Surface Chemistry
The number of statement/s which are the characteristics of physisorption is __________
A. It is highly specific in nature
B. Enthalpy of adsorption is high
C. It decreases with increase in temperature
D. It results into unimolecular layer
E...
INTEGER+4 / -12023
18Surface Chemistry
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Amongst \(\mathrm{He}, \mathrm{Ne}, \mathrm{Ar}\) and \(\mathrm{Kr}\); 1\(\mathrm{g}\) of activated charcoal adsorbs more of $...
MCQ+4 / -12023
19Surface Chemistry
In figure, a straight line is given for Freundrich Adsorption (\(y=3x+2.505\)). The value of \(\frac{1}{n}\) and \(\log \mathrm{K}\) are respectively.
MCQ+4 / -12023
20Surface Chemistry
$20 \mathrm{~mL}$ of $0.5 \mathrm{M} ~\mathrm{NaCl}$ is required to coagulate $200 \mathrm{~mL}$ of $\mathrm{As}_{2} \mathrm{S}_{3}$ solution in 2 hours. The coagulating value of $\mathrm{NaCl}$ is ____________ .
INTEGER+4 / -12023
21Surface Chemistry
What happens when a lyophilic sol is added to a lyophobic sol?
MCQ+4 / -12023
22Surface Chemistry
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The diameter of colloidal particles in solution should not be much smaller than wavelength of light to show Tyndall effect.
...
MCQ+4 / -12023
23Surface Chemistry
Four gases A, B, C and D have critical temperatures \(5.3,33.2,126.0\) and \(154.3 \mathrm{~K}\) respectively. For their adsorption on a fixed amount of charcoal, the correct order is:
MCQ+4 / -12023
24Surface Chemistry
The number of correct statements about modern adsorption theory of heterogeneous catalysis from the following is __________
A. The catalyst is diffused over the surface of reactants.
B. Reactants are adsorbed on the surface of the catalyst....
INTEGER+4 / -12023
25Surface Chemistry
The enthalpy change for the adsorption process and micelle formation respectively are
MCQ+4 / -12023
26Surface Chemistry
Ferric chloride is applied to stop bleeding because -
MCQ+4 / -12023
27Surface Chemistry
100 mL of 0.3 M acetic acid is shaken with 0.8 g of wood charcoal. The final concentration of acetic acid in the solution after adsorption is 0.125 M. The mass of acetic acid adsorbed per gram of carbon is _____________ \(\times\) 10\(-\)4 ...
INTEGER+4 / -12022
28Surface Chemistry
TLC analysis of a mixture having 3 components (A, B, C) using silica gel as the stationary phase gave following Rf values; for A = 0.72, B = 0.48, C = 0.20.
Regarding the above observations, which one of the following statements is not corr...
MCQ+4 / -12022
29Surface Chemistry
Which of the following is a correct statement?
MCQ+4 / -12022
30Surface Chemistry
A 42.12% (w/v) solution of NaCl causes precipitation of a certain sol in 10 hours. The coagulating value of NaCl for the sol in 2 hours is :
[Given : Molar mass : Na = 23.0 g mol\(-\)1 ; Cl = 35.5 g mol\(-\)1]
MCQ+4 / -12022
31Surface Chemistry
\(100 \mathrm{~mL}\) of \(5 \%\,(\mathrm{w} / \mathrm{v})\) solution of \(\mathrm{NaCl}\) in water was prepared in \(250 \mathrm{~mL}\) beaker. Albumin from the egg was poured into \(\mathrm{NaCl}\) solution and stirred well. This resulted ...
MCQ+4 / -12022
32Surface Chemistry
Given below are the critical temperatures of some of the gases:

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MCQ+4 / -12022
33Surface Chemistry
The Zeta potential is related to which property of colloids?
MCQ+4 / -12022
34Surface Chemistry
Match List - I with List - II :

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MCQ+4 / -12022
35Surface Chemistry
Match List - I with List - II.

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MCQ+4 / -12022
36Surface Chemistry
Among the following the number of curves not in accordance with Freundlich adsorption isotherm is ________.
(a)
(b)
(c)
(d)
INTEGER+4 / -12022
37Surface Chemistry
Match List-I with List-II

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...
MCQ+4 / -12022
38Surface Chemistry

If the initial pressure of a gas is 0.03 atm, the mass of the gas adsorbed per gram of the adsorbent is ___________ \(\times\) 10\(-\)2 g.
INTEGER+4 / -12022
39Surface Chemistry
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Dissolved substances can be removed from a colloidal solution by diffusion through a parchment paper.
Reason (R) : Pa...
MCQ+4 / -12022
40Surface Chemistry
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Finest gold is red in colour, as the size of the particles increases, it appears purple then blue and finally gold.
Reason R...
MCQ+4 / -12022
41Surface Chemistry
Using very little soap while washing clothes, does not serve the purpose of cleaning of clothes, because :
MCQ+4 / -12022
42Surface Chemistry
Incorrect statement for Tyndall effect is :
MCQ+4 / -12022
43Surface Chemistry
For micelle formation, which of the following statements are correct?
A. Micelle formation is an exothermic process.
B. Micelle formation is an endothermic process.
C. The entropy change is positive.
D. The entropy change is negative.
MCQ+4 / -12022
44Surface Chemistry
Given below are two statements :
Statement I : Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.
Statement II : For stabilisation of an emulsion, excess of electrolyte is added.
In the light of ...
MCQ+4 / -12022
45Surface Chemistry
When 200 mL of 0.2 M acetic acid is shaken with 0.6 g of wood charcoal, the final concentration of acetic acid after adsorption is 0.1 M. The mass of acetic acid adsorbed per gram of carbon is ____________ g.
INTEGER+4 / -12022
46Surface Chemistry
Select the graph that correctly describes the adsorption isotherms at two temperatures T1, and T2 (T1 > T2) for a gas :(x - mass of the gas absorbed ; m - mass of adsorbent ; P - pressure)
MCQ+4 / -12021
47Surface Chemistry
CH4 is absorbed on 1g charcoal at 0\(^\circ\)C following the Freundlich adsorpiton isotherm 10.0 mL of CH4 is adsorbed at 100 mm of Hg, whereas 15.0 mL is adsorbed at 200 mm of Hg. The volume of CH4 adsorbed at 300 mm of Hg is 10x mL. The v...
INTEGER+4 / -12021
48Surface Chemistry
CO2 gas adsorbs on charcoal following Freundlich adsorption isotherm. For a given amount of charcoal, the mass of CO2 adsorbed becomes 64 times when the pressure of CO2 is doubled. The value of n in the Freundlich isotherm equation is _____...
INTEGER+4 / -12021
49Surface Chemistry
Tyndall effect is more effectively shown by :
MCQ+4 / -12021
50Surface Chemistry
Lyophilic sols are more stable than lyophobic sols because :
MCQ+4 / -12021