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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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.

Removal of ______________ heat is involved in the condensation of a vapor under saturated conditions?

A Super

B Sensible

C Latent

D Both B. & C.

Review Detailed Answer

Correct Answer: Sensible

The energy radiated from a surface Q at absolute temperature T is related as__________________?

A Q ∝ T2

B Q ∝ T4

C Q ∝ T3

D None of these

Review Detailed Answer

Correct Answer: Q ∝ T4

Absorptivity of a perfect black body is unity. Which of the following has maximum absorptivity ?

A Aluminium foil

B Refractory bricks

C Iron plate

D Coke breeze

Review Detailed Answer

Correct Answer: Coke breeze

Crystallisation of solids from a homogeneous solution is a/an ______________ process?

A Exothermic

B Mildly endothermic

C Highly endothermic

D None of these

Review Detailed Answer

Correct Answer: Exothermic

Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low___________________?

A Hardness

B Dissolved solids content

C Suspended solids content

D All A., B. and C.

Review Detailed Answer

Correct Answer: All A., B. and C.

_______________ paint has the maximum absorption coefficient ?

A Black

B Yellow

C White

D Grey

Review Detailed Answer

Correct Answer: Black

Baffles are provided in heat exchangers to increase the________________?

A Fouling factor

B Heat transfer area

C Heat transfer co-efficient

D Heat transfer rate

Review Detailed Answer

Correct Answer: Heat transfer co-efficient

Prandtl and Reynold’s analogies are identical for Prandtl number value of__________________?

A 0

B 0.5

C 1

D 5

Review Detailed Answer

Correct Answer: 1

The rate of heat transfer through a pipe wall is given by, q = 2π k (Ti – T0)/ln (ri/r0). For cylinder of very thin wall, q can be approximated by__________________?

A q = [2π k (Ti + T0)/2]/ln (ri/r0)

B q = 2π ri k (Ti – T0)/(r0/ri)

C q = 2π k (Ti – T0)/(r0/ri)

D q = 2π k (Ti – T0)/[(r0 + ri)/2]

Review Detailed Answer

Correct Answer: q = 2π k (Ti – T0)/[(r0 + ri)/2]

If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will ________________?

A Increase by 1.8 times

B Decrease by 22

C Increase by 216

D Remain unchanged

Review Detailed Answer

Correct Answer: Increase by 216

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Removal of ______________ heat is involved in the condensation of a vapor under saturated conditions?

The energy radiated from a surface Q at absolute temperature T is related as__________________?

Absorptivity of a perfect black body is unity. Which of the following has maximum absorptivity ?

Crystallisation of solids from a homogeneous solution is a/an ______________ process?

Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low___________________?

_______________ paint has the maximum absorption coefficient ?

Baffles are provided in heat exchangers to increase the________________?

Prandtl and Reynold’s analogies are identical for Prandtl number value of__________________?

The rate of heat transfer through a pipe wall is given by, q = 2π k (Ti – T0)/ln (ri/r0). For cylinder of very thin wall, q can be approximated by__________________?

If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will ________________?