This set of Chemical Process Calculation Multiple Choice Questions & Answers (MCQs) focuses on “Recycle”.
1. Material that leaves a process unit that is the downstream and is returned to the same unit is called
a) Recycle
b) Purge
c) Bypass
d) None of the mentioned
View Answer
Explanation: Material that leaves a process unit that is the downstream and is returned to the same unit is called Recycle.
2. The stream containing the recycled material is known as
a) Recycle stream
b) Purge stream
c) Bypass stream
d) None of the mentioned
View Answer
Explanation: The stream containing the recycled material is known as Recycle stream.
3. A recycle system include _________ recycle stream.
a) One or more than
b) Only one
c) Only two
d) None of the mentioned
View Answer
Explanation: A recycle system include one or more than recycle stream.
4. The feed stream that enters a reactor, usually used in a process with a reactor and recycle, is
a) Process feed
b) Overall process
c) Overall product
d) None of the mentioned
View Answer
Explanation: The feed stream that enters a reactor, usually used in a process with a reactor and recycle, is process feed.
5. The objective of material balance is to assess the
a) Input-output
b) Conversion efficiency
c) Losses
d) All of the mentioned
View Answer
Explanation: The objective behind the material balance fulfils all the a, b, c purpose.
6. Recycle product is
a) Input to process
b) Output to process
c) Both output and input
d) All of the mentioned
View Answer
Explanation: Recycle product is input to process.
7. In a process involving gas (G), product (P), and recycle (R) streams, which equation correctly represents the total balance for the second part of the recycle process?
a) F + W = G + R
b) F + W = G -R
c) F + R = W + G
d) All of the mentioned
View Answer
Explanation: For the recycle process, the total balance for the first part of the process is F+R=W+G.
8. In a process with feed (F), waste (W), and product (P) streams, which of the following equations correctly represents the total balance for the entire recycle process?
a) G = P + R
b) G = P – R
c) GP = R
d) All of the mentioned
View Answer
Explanation: For the recycle process, the total balance for the second part of the process is G=P+R.
9. In a process with feed (F), waste (W), and product (P) streams, which of the following equations correctly represents the total balance for the entire recycle process?
a) F = W – P
b) G = P – R + W
c) F = W + P
d) F = W – P
View Answer
Explanation: For the recycle process, the overall balance for the entire process is represented by F=W−P.
10. In the given process diagram, which stream represents the recycle stream?
a) F
b) G
c) R
d) W
View Answer
Explanation: In a process flow, a recycle stream (R) is the material that leaves a downstream process unit and is returned to the same unit.
Sanfoundry Global Education & Learning Series – Chemical Process Calculation.
To practice all areas of Chemical Process Calculation, here is complete set of 1000+ Multiple Choice Questions and Answers.
