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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

If Rm is the minimum reflux ratio, the optimum reflux ratio may be around _________________ Rm ?
A 1.2 to 1.5
B 2.5 to 3
C 3 to 4
D 5
Correct Answer: 1.2 to 1.5
_______________ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower?
A Sherwood
B Stanton
C Lewis
D Peclet
Correct Answer: Lewis
Gaseous diffusivity at atmospheric pressure is of the order of _____________________ cm2/second?
A 1
B 1 to 5
C 5 to 10
D > 10
Correct Answer: 1
Drift in a cooling tower is ___________________?
A The water entrained by the circulating air
B Dependent on the water lost by evaporation
C Desirable
D All A., B. & C.
Correct Answer: The water entrained by the circulating air
HETP is numerically equal to HTU, only when the operating line ______________________?
A Lies below the equilibrium line
B Lies above the equilibrium line
C And equilibrium lines are parallel
D Is far from the equilibrium line
Correct Answer: And equilibrium lines are parallel
At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbent __________________?
A Increases
B Decreases
C Remains unchanged
D Increases exponentially
Correct Answer: Decreases
Equilibrium moisture of a solid is equal to the total moisture minus free moisture. Which of the following substances will have maxi-mum equilibrium moisture ?
A Anthracite coal
B Rag paper
C Bamboo
D Inorganic solids
Correct Answer: Bamboo
Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and _________________?
A Humidified with wet bulb temperature decreasing
B Humidified at constant wet bulb temperature
C Dehumidified
D None of these
Correct Answer: Humidified with wet bulb temperature decreasing
Components, having widely different boiling point in a binary mixture, can be separated using ________________ distillation?
A Molecular
B Extractive
C Steam
D Simple
Correct Answer: Simple
Humid volume is the total volume in m3 of 1 kg of _____________________?
A Vapour laden gas at 1 atm. and room temperature
B Gas plus its accompanying vapour at 1 atm. and room temperature
C Gas plus its accompanying vapour at 1 atm. and gas temperature
D Vapour laden gas at 1 atm. and gas temperature
Correct Answer: Gas plus its accompanying vapour at 1 atm. and gas temperature
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