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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

The following plot gives the saturated humidity (He) versus temperature (T).Line joining (H1, T1) and (H2, T2) is the constant enthalpy line. Choose the correct one from among the alternatives A, B, C and D____________________?
A T1-Dew point temp; T2-Dry bulb temp; T3-Wet bulb temp
B T1-Dew point temp; T2-Wet bulb temp; T3-Dry bulb temp
C T1-Wet bulb temp; T2-Dry bulb temp; T3-Dew point temp
D T1-Dry bulb temp; T2-Wet bulb temp; T3-Dew point temp
Correct Answer: T1-Dry bulb temp; T2-Wet bulb temp; T3-Dew point temp
In a binary system, separation is very efficient, when the relative volatility is_______________?
A 1
B > 1
C < 1
D 0.5
Correct Answer: 1
Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty ?
A Sieve plate column
B Bubble cap column
C Randomly packed column
D Wetted wall column
Correct Answer: Wetted wall column
Dryer widely used in a textile industry is ______________ dryer?
A Festoon
B Cylinder
C Conveyor
D Tunnel
Correct Answer: Conveyor
Ponchon-Savarit method analyses the fractional equipment based on___________________?
A Enthalpy balance only
B Material balance only
C Both enthalpy and material balances
D The assumption of constant molal-overflow
Correct Answer: Both enthalpy and material balances
Minimum possible diameter of a packed column is decided mainly by the________________________?
A Flooding
B Gas viscosity
C Liquid density
D Liquid hold up
Correct Answer: Flooding
For the same process conditions, the reflux ratio of an unlagged distillation column___________________?
A Decreases in winter
B Increases in winter
C Increases in summer
D None of these
Correct Answer: Increases in winter
A plait point is the point on the solubility curve, where the tie line reduces to a point. What is the number of plait point for a ternary system containing two pairs of partially miscible liquids ?
A 0
B 1
C 2
D 3
Correct Answer: 0
Entrainer used in Azeotropic distillation should____________________?
A Form a low boiling azeotrope with one of the constituents of the mixture
B Form a new azeotrope of low relative volatility with one of the constituents of the mixture
C Have high latent heat of vaporisation
D Have high viscosity to provide high tray efficiency
Correct Answer: Form a low boiling azeotrope with one of the constituents of the mixture
Absorption factor method is used to calculate the number of ideal stages, when_______________________?
A Operating line lies above the equilibrium line
B Operating line lies below the equilibrium line
C Both operating and equilibrium lines are parallel
D Pressure drop in the column is very high
Correct Answer: Both operating and equilibrium lines are parallel
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