Engineering Questions with Answers - Multiple Choice Questions
Separation Processes MCQ’s – FUG Method
1 - Question
Low key and high key are _______ in volatility.
a) Same
b) Adjacent
c) Different
d) Not related
View Answer
Explanation: Low key and high key are adjacent in volatility.
2 - Question
What is true if debutanizer is placed first in sequence?
a) N-butane is LK and isobutane is HK
b) Isobutane is LK and n-butane is HK
c) Both are LK
d) Both are HK
View Answer
Explanation: If the debutanizer is first placed in sequence then the specifications require that N-butane is LK and isobutane is HK.
3 - Question
Where is the separation more difficult?
a) Debutanizer
b) Deisobutanizer
c) Both are simple
d) Both are difficult
View Answer
Explanation: separation is more difficult in deisobutanizer.
4 - Question
The light key split is ______ whereas high key split is _______
a) Not sharp, sharp
b) Sharp, sharp
c) Sharp, not sharp
d) Not sharp, not sharp
View Answer
Explanation: The lightkey split is sharp whereas high key split is not.
5 - Question
Why is column pressure fixed after design problems are solved?
a) Because the answer of design problems is column pressure
b) The design problems are independent of column pressure
c) The design problems are difficult
d) The design problems do not use column pressure while solving
View Answer
Explanation: Since there are no available algorithms for solving design problems, the design problems are difficult. Hence column pressure is decided later.
6 - Question
If the :
Component distillate rate for LK (di) = 20
Component distillate rate for HK (dj) = 30
Bottom flow rate for LK (bi) = 30
Bottom flow rate for HK (bj) = 10
Mean relative volatility is 2
What is the minimum number of stages required?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: Only 1 stage is required here.
7 - Question
If the :
Component distillate rate for LK (di) = 20
Component distillate rate for HK (dj) = 30
Bottom flow rate for LK (bi) = 30
Bottom flow rate for HK (bj) = 10
Mean relative volatility is 3
What is the minimum number of stages required?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: Only 1 stage is required here.
8 - Question
If the :
Component distillate rate for LK (di) = 40
Component distillate rate for HK (dj) = 30
Bottom flow rate for LK (bi) = 30
Bottom flow rate for HK (bj) = 10
Mean relative volatility is 3
What is the minimum number of stages required?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: Only 1 stage is required here.
9 - Question
If the :
Component distillate rate for LK (di) = 50
Component distillate rate for HK (dj) = 40
Bottom flow rate for LK (bi) = 30
Bottom flow rate for HK (bj) = 10
Mean relative volatility is 2
What is the minimum number of stages required?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: Only 1 stage is required here.
10 - Question
If the :
Component distillate rate for LK (di) = 80
Component distillate rate for HK (dj) = 30
Bottom flow rate for LK (bi) = 30
Bottom flow rate for HK (bj) = 10
Mean relative volatility is 2
What is the minimum number of stages required?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: Only 2 stages are required here.
11 - Question
If the :
Component distillate rate for LK (di) = 160
Component distillate rate for HK (dj) = 30
Bottom flow rate for LK (bi) = 30
Bottom flow rate for HK (bj) = 10
Mean relative volatility is 2
What is the minimum number of stages required?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: Only 4 stages are required here.
12 - Question
If the :
Component distillate rate for LK (di) = 60
Component distillate rate for HK (dj) = 10
Bottom flow rate for LK (bi) = 30
Bottom flow rate for HK (bj) = 10
Mean relative volatility is 2
What is the minimum number of stages required?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: Only 4 stages are required here.
13 - Question
If the :
Component distillate rate for LK (di) = 90
Component distillate rate for HK (dj) = 20
Bottom flow rate for LK (bi) = 30
Bottom flow rate for HK (bj) = 10
Mean relative volatility is 2
What is the minimum number of stages required?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: Only 4 stages are required here.
14 - Question
If the :
Component distillate rate for LK (di) = 50
Component distillate rate for HK (dj) = 10
Bottom flow rate for LK (bi) = 20
Bottom flow rate for HK (bj) = 10
Mean relative volatility is 2
What is the minimum number of stages required?
a) 1
b) 2
c) 3
d) 4
View Answer
Answer: c
Explanation: Only 3 stages are required here.