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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

1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is________________________?
A 0.4
B 0.25
C 0.2
D 0.175
Correct Answer: 0.2
Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the _______________ moisture?
A Bound
B Unbound
C Critical
D None of these
Correct Answer: Bound
Which of the following is not a continuous drier ?
A Drum drier
B Spray drier
C Tunnel drier
D Tray drier
Correct Answer: Tray drier
In an operating distillation column, the______________________?
A Vapors and liquids are at their dew point and bubble point respectively
B Driving force for the liquid flow is its specific weight
C Driving force for the vapor flow is the pressure drop, as the pressure decreases gradually from
D Highest temperature is encountered at the top of the column
Correct Answer: Driving force for the vapor flow is the pressure drop, as the pressure decreases gradually from
As per Gilliland’s equation, the diffusivity is___________________?
A Directly proportional to ‘T1.5’
B Inversely proportional to ‘P’
C Dependent on the molecular volume & molecular weight of components
D All A , B. & C.
Correct Answer: All A , B. & C.
Pick out the wrong statement ?
A Reboiler is not used in open steam distillation
B The separation of solutes of different molecular sizes in a liquid solution by use of a suitable
C Freeze drying is used for the drying of fish
D Fenske-Underwood equation is used for calculating theoretical number of plates in a
Correct Answer: Fenske-Underwood equation is used for calculating theoretical number of plates in a
Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the ________________ of a fibre ?
A Electrical resistance
B Thermal conductivity
C Strength
D None of these
Correct Answer: Electrical resistance
Which is the controlling factor for a drum drier ?
A Diffusion
B Heat transfer
C Both A. and B.
D Neither A. nor B.
Correct Answer: Heat transfer
A minimum boiling azeotrope is exemplified by__________________________?
A Toluene-benzene
B Acetone-carbon disulphide
C Water-isobutyl alcohol
D None of these
Correct Answer: Acetone-carbon disulphide
Relative volatility does not change appreciably with the change in_____________________?
A Temperature
B Vapour pressure of either component
C Total pressure
D None of these
Correct Answer: Temperature
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