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Multiphase Systems MCQ Questions & Answers

Multiphase Systems MCQs : This section focuses on the "Multiphase Systems". These Multiple Choice Questions (MCQs) should be practiced to improve the Multiphase Systems skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

How to separate vapor-liquid-liquid system?

A. Fractional distillation
B. Fractional crystallization
C. Zone melting
D. Three phase isothermal flash

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Question 2

If at a certain pressure the vapor pressure of water is 10pisa and the mole fraction of water is 0.8, find out the crystallizer pressure.

A. 5pisa
B. 6pisa
C. 7pisa
D. 8pisa

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Question 3

If at a certain pressure the vapor pressure of water is 2pisa and the mole fraction of water is 0.9, find out the crystallizer pressure.

A. 0.45pisa
B. 1.8pisa
C. 3.6pisa
D. 0.81pisa

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Question 4

If at a certain pressure the vapor pressure of water is 4.74pisa and the mole fraction of water is 0.923, find out the crystallizer pressure.

A. 2.5pisa
B. 4.38pisa
C. 4.56pisa
D. 4.76pisa

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Question 5

If at a certain pressure the vapor pressure of water is 6pisa and the mole fraction of water is 0.7, find out the crystallizer pressure.

A. 3.3pisa
B. 3.5pisa
C. 3.96pisa
D. 4.2pisa

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Question 6

If at a certain pressure the vapor pressure of water is 8pisa and the mole fraction of water is 0.9, find out the crystallizer pressure.

A. 0.64pisa
B. 7.2pisa
C. 0.66pisa
D. 0.81pisa

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Question 7

The calculations of multiphase system are made by:

A. Graph
B. Hand calculations
C. Trial and error
D. Process simulators

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Question 8

What is the enthalpy balance for three phase system?

A. hFF + Q =hvV + hLL(1) + hLL(2)
B. hFF =hvV + hLL(1) + hLLL(2)
C. hFF – Q =hvV + hL(1) + hLLL(2)
D. hFF + Q =hvV + hLL + hLLL

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Question 9

What is the third phase in all the two phase systems?

A. The adsorbent
B. The interface
C. The container
D. The atmosphere

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Question 10

Why are calculations for three phase flash difficult?

A. Because of strong dependency of K values on liquid phase composition when two immiscible liquids are present
B. Because of strong dependency of K values on vapor phase composition when two immiscible liquids are present
C. Because of strong dependency of K values on liquid phase composition when two miscible liquids are present
D. Because of strong dependency of K values on liquid phase composition when three immiscible liquids are present

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