Surface Chemistry MCQ-M.Sc. First year PG degree course Semester First Physical Chemistry paper CHE-104

 M.Sc. First year Postgraduate degree course Semester First Physical Chemistry paper CHE-104

Chapter – Surface Chemistry

Multiple Choice questions

1.  ____are surface-active agents that aggregate near or have a strong effect on modifying the interface.
a) Carboxylate
b) Tween
c) Ampholytic elements
d) Surfactants

2.  The ____of surfactants depends the most crucial factor that is strong water—water interaction, the hydrophobic effect.
a) CMC
b) Micelle
c) Polarity
d) Non-polarity

3.   Many surfactants that form micelles have a solubility below their C.M.C. Thus at a certain temperature, known as the ___ point, the solubility increases dramatically since the micelles are quite soluble.
a) Mars
b) Kraft
c) Kraffin
d) Curtis

4. The surfactants which contains both cationic and anionic centers attached to the same molecule is called as ---------- surfactant.
a) Anionic
b) Cationic
c) Amphoteric
d) Non-ionic

5.  ---------- are the compound that lowers the surface tension between two liquids or between a liquid and a solid.
a) Reverse micelles
 b) Surface active agent
c) Counter ion
d) Catalyst

6.What is the molecular formula of stearate ion?
  a) C₁₇H₃₅COO^–
  b) C₃₅H₁₇COO⁺
 c) C₃₅H₁₇COO^–
 d) C₁₇H₃₅COO⁺

7.Which part of the stearate ion is hydrophilic in nature?
 a) Tail
b) Hydrocarbon chain
c) Head
d) None of the mentioned

8. Which of the following is water insoluble?
a) COO^–
b) Na⁺
c) C₁₇H₃₅
d) All of the mentioned

9.Select the incorrect statement from the following options.
a) In the micelle formation, the water soluble heads are directed towards the centre
b) In the micelle formation, the water soluble heads are on the surface in contact with the water
c) In the micelle formation, the water insoluble tails are directed towards the centre
d) None of the mentioned

10.The transition of ions to micelle is ___________
a) Reversible
b) Irreversible
c) All of the mentioned
d) None of the mentioned

11.What is Critical Micelle Concentration?
a) The maximum amount of concentration that is required for the formation of micelle
b) The minimum amount of concentration that is required for the formation of micelle
c) The maximum amount of concentration that is not required for the formation of micelle
d) The minimum amount of concentration that is not required for the formation of micelle

12.Micelles behave as colloids only when?
a) Concentration is less than CMC
b) Concentration is equal to CMC
c) Concentration is greater than CMC
d) They always behave as colloids

13. The conductivity of micelles is ___________
a) Higher than a colloidal solution
b) Lower than a colloidal solution
c) Equals to colloidal solution
d) None of the mentioned

14. The size of counter-ions increases CMC….
a) Decreases
b) Increases
c)  Remains same
d) Not any change

15. Addition of electrolyte to the solution CMC….
a) Decreases
b) Increases
c)  Remains same
d) Not any change

 16. With increase in temperature CMC value…..
a) Decreases
b) Increases
c)  Remains same
d) Not any change

   

17. CMC of non-inogenic surfactants can be measured by
a)  Conductivity measurement
b) Surface tension
c)  Both a and b
d) None of these

]

 18. Colloidal electrolytes are the salts in which..
a) One ion is colloidal size
b) Both ions are colloidal size
c)  Small size ions
d) None of these

 19. Reverse micelles are formed in….
a)  Aqueous solvents
b) Organic solvents
c)  Non aqueous solvents
d) Both b and c

20. Thermodynamic model in which micelles and surfactants considered in different phases
a)  Mass action model
b) Phase separation model
c)  Both a and b
d) None of these

More study Material for M.Sc. First Year (First Semester)

CHE-101 Analytical Chemistry

Analytical chemistry unit-1 MCQ

Click here

Analytical chemistry unit-2 MCQ

Click here

Analytical chemistry unit-3 MCQ

Click here

Chromatography mcq Part-1

Click here

Chromatography mcq Part-2

Click here

Chromatography Mcq  Part-3

Click here

CHE-104 Physical Chemistry

Chemical dynamics Part-I pdf notes

Click here

Chemical dynamics Part-II pdf notes

Click here

Surface Chemistry Handwritten notes pdf Part-I

Click here

Surface Chemistry Handwritten notes pdf Part-II

Click here

Surface Chemistry MCQ

Click here

Surface Chemistry Handwritten notes pdf Part-III

Click here

CHE-103 Organic Chemistry

Organic Chemistry paper CHE-103; Practice Set (1,2,3)  M.Sc. First year

Click here

Organic Chemistry paper CHE-103; Practice Set (4)  M.Sc. First year

Click here

Organic Chemistry paper CHE-103; Practice Set (5)  M.Sc. First year

Click here