Engineering Questions with Answers - Multiple Choice Questions

# Separation Processes MCQ’s – Membrane Materials-2

1 - Question

At what temperature is film stretching done?
a) Room temperature
b) Melting point of polymer
c) 100oc
d) 200oc
Explanation: Film stretching is done at melting point of polymer.

2 - Question

Which method is not employed in preparation of asymmetric membrane?
a) Precipitation by cooling
b) Track etching
c) Precipitation by evaporation
d) Precipitation by immersion in a solvent
Explanation: Track etching is not used in making asymmetric membranes.

3 - Question

What is a composite membrane?
a) Same as symmetric membrane
b) Same as asymmetric membrane
c) Asymetric membrane cast on a support
d) Two types of membrane are together
Explanation: A composite membrane functions like a asymmetric membrane but it is cast on a solid support.

4 - Question

Ceramic membrane is a type of:
a) Polymeric membrane
b) Liquid membrane
c) Inorganic membrane
d) Gas membrane
Explanation: Ceramic membrane is a type of inorganic membrane.

5 - Question

Microporous membrane s a type of
a) Ceramic membrane
b) Liquid membrane
c) Polymeric membrane
d) Inorganic membrane
Explanation: Microporous membrane is a type of polymeric membrane.

6 - Question

What is the molar transmembrane flux of species if
Premeability P= 10 units
Membrane thickness l= 10units
Driving force = 500units
a) 500
b) 200
c) 400
d) 600

Explanation: Since P/l(driving force)= N, hence N= 500.

7 - Question

What is the molar transmembrane flux of species if
Premeability P= 10 units
Membrane thickness l= 5units
Driving force = 500units
a) 500
b) 200
c) 400
d) 1000

Explanation: Since P/l(driving force)= N, hence N= 1000.

8 - Question

What is the molar transmembrane flux of species if
Premeability P= 10 units
Membrane thickness l= 10units
Driving force = 200units
a) 500
b) 200
c) 400
d) 600
Explanation: Since P/l(driving force)= N, hence N= 200.

9 - Question

What is the molar transmembrane flux of species if
Premeability P= 50 units
Membrane thickness l= 10units
Driving force = 100units
a) 5000
b) 2005
c) 4003
d) 6000

Explanation: Since P/l(driving force)= N, hence N= 5000.

10 - Question

What is the molar transmembrane flux of species if
Premeability P= 10 units
Membrane thickness l= 100units
Driving force = 700units
a) 500
b) 20
c) 40
d) 70