M C Q s D r i v e

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.

_____________ extractor is used for the concentration of radioactive nuclear waste?

A Pulsed column
B Sieve plate
C Mixer-settler
D Bollman
Correct Answer: Pulsed column

In case of unsaturated air_________________?

A Dew point < wet bulb temperature
B Wet bulb temperature < dry bulb temperature
C Both A. and B.
D Neither A. not B.
Correct Answer: Both A. and B.

Minimum reflux ratio in a distillation column results in_____________________?

A Optimum number of trays
B Minimum reboiler size
C Maximum condenser size
D Minimum number of trays
Correct Answer: Maximum condenser size

High pressure at the bottom of a distillation tower handling heat sensitive materials results in____________________?

A Thermal decomposition of bottoms
B Increased relative volatility
C Erosion of the tower
D Very efficient operation
Correct Answer: Thermal decomposition of bottoms

In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be___________________?

A At ground level
B 2 metres above the ground
C 5 metres above ground
D 10 metres above ground
Correct Answer: At ground level

Measurement of the interfacial area of mass transfer is achieved easily & accurately in case of a _______________ column?

A Spray
B Packed
C Bubble cap plate
D Wetted wall
Correct Answer: Wetted wall

At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes_____________________?

A 1
B 0
C ∞
D None of these
Correct Answer: ∞

Which of the following provides maximum contact surface for a liquid-vapour system ?

A Packed tower
B Bubble-cap plate column
C Sieve-plate column
D Wetted wall column
Correct Answer: Packed tower

Experimental determination of ________________ is done by wetted wall column method?

A Diffusion co-efficient
B Mass transfer co-efficient
C NTU
D None of these
Correct Answer: Mass transfer co-efficient

Which is not concerned directly with mass transfer ?

A Schmidt number
B Sherwood number
C Lewis relationship
D Froude number
Correct Answer: Froude number