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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

All Topics  9594

Boiling point elevation of an ideal solution_______________?
A Increases rapidly with temperature rise
B Decreases rapidly with temperature rise
C In independent of pressure
D Both B. and C.
Correct Answer: Increases rapidly with temperature rise
The main function of baffles provided in a shell and tube heat exchanger is to______________?
A Facilitate the cleaning of outer tube surface
B Enhance turbulence
C Hold the tubes in position
D All A , B & C
Correct Answer: Enhance turbulence
Steam side heat transfer co-efficient in an evaporator is in the range of ______________ kcal/hr.m2°C?
A 10-50
B 100-500
C 1000-1500
D 5000-15000
Correct Answer: 5000-15000
The ratio of total radiating power to the absorptivity of the body depends upon the _____________ as per Kirchoff‟s law?
A Wavelength of radiation
B Nature of the body
C Temperature of the body
D None of these
Correct Answer: Temperature of the body
For small temperature difference, the heat transfer rate as per Newton’s law of cooling is proportional to (where, Δt = excess temperature) ?
A Δt
B Δt2
C Δt3
D √(Δt)
Correct Answer: Δt
Overall heat transfer co-efficient for cooling of hydrocarbons by water is about_________________?
A 50 -100 Kcal/hr.m2.°C
B 50 -100 W/m2.°K
C 50 -100 BTU/hr. ft.2°F
D 1000 – 1500 BTU/hr. ft.2°F
Correct Answer: 50 -100 BTU/hr. ft.2°F
Intermittent tube cleaning is possible to be done in case of a _____________ evaporator?
A Basket type
B Horizontal tube
C Calandria
D
Correct Answer: Basket type
In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient______________?
A Increases
B Decreases
C Is not affected
D May increase or decrease; depends on the feed
Correct Answer: Decreases
In evaporators, lowering the feed temperature_______________?
A Increases the heating area required
B Reduces the economy
C Both A. and B.
D Decreases the heating area required
Correct Answer: Both A. and B.
Shell side pressure drop in a shell and tube heat exchanger does not depend upon the_________________?
A Baffle spacing & shell diameter
B Tube diameter & pitch
C Viscosity, density & mass velocity of shell side fluid
D None of these
Correct Answer: None of these
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