CBSE Class 12 Surface Chemistry Multiple Choice Questions with Answers. MCQ Questions Class 12 Surface Chemistry with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Surface Chemistry MCQs with Answers to know their preparation level.
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MCQ Questions Class 12 Surface Chemistry with Answers - Set - 4
Question 1:
Which one of the following impurities present in colloidal solution cannot be removed by electrodialysis?
(a) Sodium chloride
(b) Potassium sulphate
(c) Urea
(d) Calcium chlorid
Correct Answer – (C)
Question 2 :
Gold numbers of protective colloids A, B, C and D are 0.50, 0.01, 0.10 and 0.005, respectively. The correct order of their protective powers is
(a) D < A < C < B
(b) C < B < D < A
(c) A < C < B < D
(d) B < D < A < C
Correct Answer – (C)
Question 3 :
A colloidal solution is subjected to an electrical field. The particles move towards anode. The coagulation of same sol is studied using NaCl, BaCl2 and AlCl3 solutions. Their coagulating power should be
(a) NaCl > BaCl2 > AlCl3
(b) BaCl2 > AlCl3 > NaCl
(c) AlCl3 > BaCl2 > NaCl
(d) BaCl2 > NaCl > AlCl3
Correct Answer – (C)
Question 4 :
When a few typical solutes are separated by a particular selective membrane such as protein particles, blood corpuscles, this process is called
(a) transpiration
(b) endosmosis
(c) dialysis
(d) diffusion
Correct Answer – (C)
Question 5 :
At the critical micelle concentration (CMC) the surfactant molecules
(a) associate
(b) dissociate
(c) decompose
(d) become completely soluble.
Correct Answer – (A)
MCQ Questions Class 12 Surface Chemistry with Answers
Question 6:
The disease kala azar is caused by
(a) colloidal antimony
(b) milk of magnesia
(c) argyrols
(d) colloidal gold
Correct Answer – (A)
Question 7:
Under the influence of an electric field, the particles in a sol migrate towards cathode. The coagulation of the same sol is studied using NaCl, Na2SO4 and Na3PO4 solutions. Their coagulating values will be in the order
(a) NaCl > Na2SO4 > Na3PO4
(b) Na2SO4 > Na3PO4 > NaCl
(c) Na3PO4 > Na2SO4 > NaCl
(d) Na2SO4 > NaCl > Na3PO4
Correct Answer – (A)
Question 8:
Preparation of Lyophobic sols by chemical method involves
(a) double decomposition
(b) oxidation & reduction
(c) hydrolysis
(d) all of these
Correct Answer – (D)
Question 9:
The ability of anion, to bring about coagulation of a given colloid, depends upon
(a) magnitude of the charge
(b) both magnitude and charge
(c) its charge only
(d) sign of the charge alone.
Correct Answer – (B)
Question 10:
Which one of the following method is commonly used method for destruction of colloid?
(a) Dialysis
(b) Condensation
(c) Filteration by animal membrane
(d) By adding electrolyte
Correct Answer – (D)
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