Q11Multiple choice
Which of the following is an example of absorption?
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Correct option: B
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Worked solution
Option (ii) is the answer.
NCERT Exemplar · Class 12 · Chemistry
Chapter 5: Surface Chemistry
Practice each question, then open the answer or worked solution.
I. Multiple Choice Questions (Type-I)
25 questionsQ12Multiple choice
Based on data given below to predict which of the following gases shows
the least adsorption on a definite amount of charcoal?
| Gas
Critical temo./K |
CO2
304 |
SO2
630 |
CH4
190 |
H2
33 |
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Correct option: D
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Worked solution
Option (iv) is the answer.
Q13Multiple choice
In which of the following reactions heterogeneous catalysis is involved?
Option (i) is the answer.
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Solution coming soon.
Q14Multiple choice
At high concentration of soap in water, soap behaves as ____________.
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Correct option: B
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Worked solution
Option (ii) is the answer.
Q15Multiple choice
Which of the following will show the Tyndall effect?
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Correct option: B
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Worked solution
Option (ii) is the answer.
Q16Multiple choice
The method by which lyophobic sol can be protected.
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Correct option: C
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Worked solution
Option (iii) is the answer.
Q17Written answer
Freshly prepared precipitate sometimes gets converted to colloidal solution by
___________.
(i) coagulation
(ii) electrolysis (iii) diffusion
(iv) peptisation
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Worked solution
Option (iv) is the answer.
Q18Multiple choice
Which of the following electrolytes will have maximum coagulating value for
AgI/Ag+
sol?
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Correct option: B
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Worked solution
Option (ii) is the answer.
Q19Multiple choice
A colloidal system having a solid substance as a dispersed phase and a liquid
as a dispersion medium is classified as ____________.
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Correct option: D
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Worked solution
Option (iv) is the answer.
Q20Multiple choice
The values of colligative properties of the colloidal solution are of small order in
comparison to those shown by true solutions of same concentration because
of colloidal particles __________________.
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Correct option: D
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Worked solution
Option (iv) is the answer.