Explore topic-wise MCQs in Separation Processes.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Separation Processes knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the distillation rate if feed rate is 31moles/s and mole fraction of LK in feed is 0.9, and mole fraction of LK in distillate and bottom is 0.6, 0.4?

A. 23moles/s
B. 26moles/s
C. 28moles/s
D. 31moles/s
Answer» E.
Discussion
2.

What is the distillation rate if feed rate is 9moles/s and mole fraction of LK in feed is 0.7, and mole fraction of LK in distillate and bottom is 0.5, 0.3?

A. 45moles/s
B. 16moles/s
C. 18moles/s
D. 20moles/s
Answer» D. 20moles/s
Discussion
3.

What is the distillation rate if feed rate is 20moles/s and mole fraction of LK in feed is 0.8, and mole fraction of LK in distillate and bottom is 0.5, 0.4?

A. 80moles/s
B. 12moles/s
C. 16moles/s
D. 20moles/s
Answer» B. 12moles/s
Discussion
4.

What is the formula for distillation rate according to mcCabe-thiele’s method?

A. D= F(z F – x B )/(x D + x B )
B. D= F(z F – x B)/(x D /x B )
C. D= F(z F – x D )/(x D – x B )
D. D= F(z F – x B )/(x D – x B )
Answer» E.
Discussion
5.

For what value of α1,2 ,the separation cannot be achieved?

A. 0.8
B. 1.2
C. 1.3
D. 1.8
Answer» B. 1.2
Discussion
6.

If LK=1 and HK=2, what is the formula for α 1,2 ?

A. α 1,2 =K1/K2
B. α 1,2 =K1*K2
C. α 1,2 =K1-K2
D. α 1,2 =K1+K2
Answer» B. α 1,2 =K1*K2
Discussion
7.

What is meant by high key (HK)?

A. A feed that contains less volatile components
B. A feed that has less mass
C. A feed that has higher concentration of less molecular weight solute
D. A feed that contains more volatile components
Answer» B. A feed that has less mass
Discussion
8.

WHAT_IS_THE_DISTILLATION_RATE_IF_FEED_RATE_IS_9MOLES/S_AND_MOLE_FRACTION_OF_LK_IN_FEED_IS_0.7,_AND_MOLE_FRACTION_OF_LK_IN_DISTILLATE_AND_BOTTOM_IS_0.5,_0.3??$

A. 45moles/s
B. 16moles/s
C. 18moles/s
D. 20moles/s
Answer» D. 20moles/s
Discussion
9.

What_is_the_distillation_rate_if_feed_rate_is_31moles/s_and_mole_fraction_of_LK_in_feed_is_0.9,_and_mole_fraction_of_LK_in_distillate_and_bottom_is_0.6,_0.4?$

A. 23moles/s
B. 26moles/s
C. 28moles/s
D. 31moles/s
Answer» E.
Discussion
10.

What is the distillation rate if feed rate is 4moles/s and mole fraction of LK in feed is 0.7, and mole fraction of LK in distillate and bottom is 0.5, 0.4?

A. 8moles/s
B. 12moles/s
C. 16moles/s
D. 20moles/s
Answer» C. 16moles/s
Discussion
11.

What is the formula for distillation rate according to mcCabe-thiele’s method?$

A. D= F(z <sub>F</sub> – x <sub>B</sub> )/(x <sub>D</sub> + x <sub>B</sub> )
B. D= F(z <sub>F</sub> – x <sub>B</sub>)/(x <sub>D</sub> /x <sub>B</sub> )
C. D= F(z <sub>F</sub> – x <sub>D</sub> )/(x <sub>D</sub> – x <sub>B</sub> )
D. D= F(z <sub>F</sub> – x <sub>B</sub> )/(x <sub>D</sub> – x <sub>B</sub> )
Answer» E.
Discussion
12.

For what value of α1,2 ,the separation cannot be achieved?$

A. 0.8
B. 1.2
C. 1.3
D. 1.8
Answer» B. 1.2
Discussion
13.

If LK=1 and HK=2, what is the formula for α 1,2 ?$

A. α <sub>1,2</sub> =K1/K2
B. α <sub>1,2</sub> =K1*K2
C. α <sub>1,2</sub> =K1-K2
D. α <sub>1,2</sub> =K1+K2
Answer» B. ‚âà√≠¬¨¬± <sub>1,2</sub> =K1*K2
Discussion
14.

What is meant by light key (LK)?

A. A feed that contains less volatile components
B. A feed that has less mass
C. A feed that has higher concentration of less molecular weight solute
D. A feed that contains more volatile components
Answer» E.
Discussion
15.

What is the goal of distillation?

A. To produce a distillate rich in light key and the bottoms product rich in high key
B. To produce a distillate rich in high key and the bottoms product rich in light key
C. To produce a distillate rich in light key and the bottoms product rich in light key
D. To produce a distillate rich in high key and the bottoms product rich in high key
Answer» B. To produce a distillate rich in high key and the bottoms product rich in light key
Discussion