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JEE • CHEMISTRY • SURFACE CHEMISTRY
Surface chemistry practice · Easy
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Practice format and chapter quiz
These sets use single-correct-answer MCQs. They do not cover every JEE Main or JEE Advanced question format and are not full-length mock papers.
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Showing 121-128 of 128 questions
121
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121 of 128
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Which of the following is not the property of hydrophilic sol.?
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Correct option: B
Viscosity and surface tension are equal to that of water
Option B (Viscosity and surface tension are equal to that of water) is not a property of hydrophilic sols because hydrophilic sols have higher viscosity and lower surface tension than water.
122
Easy
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Which one of the following is a lyophilic colloidal solution?
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Correct option: C
Starch aqueous solution
Option C (Starch aqueous solution) is correct because starch readily forms a colloidal solution in water, exhibiting lyophilic properties.
123
Easy
123 of 128
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Hardy-Schulze rule states that :
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Correct option: B
Sols are coagulated by effective ions whose charge is opposite to that of sol and the ions of higher charge are much more effective than the ions of lower charge
Option B is correct because the Hardy-Schulze rule states that ions with higher charges are more effective in coagulating colloids with opposite charges.
124
Easy
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Blood may be purified by
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Correct option: A
Dialysis
Option A (Dialysis) is correct because dialysis is a process that separates small molecules from larger ones in a solution, and it is used to purify blood by removing waste products.
125
Easy
125 of 128
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Emulsion is a colloidal solution of
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Correct option: A
Liquid in liquid
Option A (Liquid in liquid) is correct because an emulsion is a colloidal dispersion of one liquid in another immiscible liquid.
126
Easy
126 of 128
Understanding
+4 | -1
The gold number of gelatin, haemoglobin and sodium acetate are 0.005, 0.05 and 0.7 respectively. The protective actions will be in order
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Correct option: B
Gelatin >haemoglobin> sodium acetate
Option B is correct because protective power is inversely proportional to the gold number, so the substance with the lowest gold number has the highest protective power.
127
Easy
127 of 128
Remembering
+4 | -1
Lock- key fit theory is for
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Correct option: C
Enzyme action
Option C (Enzyme action) is correct because the lock-and-key model describes the specific interaction between an enzyme and its substrate, where the enzyme's active site is shaped to fit a specific substrate.
128
Easy
128 of 128
Understanding
+4 | -1
Blue colour of water in sea is due to
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Correct option: C
Scattering of light by water
Option C (Scattering of light by water) is correct because the blue color of the sea is due to the scattering of blue light by water molecules, a phenomenon known as Rayleigh scattering.
Revision notes and key takeaways
Review SURFACE CHEMISTRY in your textbook or class notes, then use this set to check your understanding.
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