MCQsDrive | MCQsDrive

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.

Overall heat transfer co-efficient for cooling of hydrocarbons by water is about_________________?

A 50 -100 Kcal/hr.m2.°C

B 50 -100 W/m2.°K

C 50 -100 BTU/hr. ft.2°F

D 1000 – 1500 BTU/hr. ft.2°F

Review Detailed Answer

Correct Answer: 50 -100 BTU/hr. ft.2°F

Intermittent tube cleaning is possible to be done in case of a _____________ evaporator?

A Basket type

B Horizontal tube

C Calandria

Review Detailed Answer

Correct Answer: Basket type

In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient______________?

A Increases

B Decreases

C Is not affected

D May increase or decrease; depends on the feed

Review Detailed Answer

Correct Answer: Decreases

In evaporators, lowering the feed temperature_______________?

A Increases the heating area required

B Reduces the economy

C Both A. and B.

D Decreases the heating area required

Review Detailed Answer

Correct Answer: Both A. and B.

Shell side pressure drop in a shell and tube heat exchanger does not depend upon the_________________?

A Baffle spacing & shell diameter

B Tube diameter & pitch

C Viscosity, density & mass velocity of shell side fluid

D None of these

Review Detailed Answer

Correct Answer: None of these

The most conducive surface for dropwise condensation to occur is the _____________ surface?

A Coated

B Oily

C Glazed & polished

D Smooth

Review Detailed Answer

Correct Answer: Oily

Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be_________________?

A 0.35

B 0.45

C 0.55

D 0.85

Review Detailed Answer

Correct Answer: 0.45

The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) ?

A K/h0

B 2K/h0

C h0/K

D h0/2K

Review Detailed Answer

Correct Answer: K/h0

Analogy between mass and heat transfer is not applicable in case of____________________?

A Same velocity profile or equal eddy diffusivities

B Thermal or pressure mass diffusion

C Viscous heating or chemical reaction

D Both B. and C.

Review Detailed Answer

Correct Answer: Both B. and C.

An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is___________________?

A 4000

B 9000

C 4600

D 3000

Review Detailed Answer

Correct Answer: 4000

Showing 311 to 320 of 510 results

Contact Info

Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Overall heat transfer co-efficient for cooling of hydrocarbons by water is about_________________?

Intermittent tube cleaning is possible to be done in case of a _____________ evaporator?

In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient______________?

In evaporators, lowering the feed temperature_______________?

Shell side pressure drop in a shell and tube heat exchanger does not depend upon the_________________?

The most conducive surface for dropwise condensation to occur is the _____________ surface?

Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be_________________?

The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface) ?

Analogy between mass and heat transfer is not applicable in case of____________________?

An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is___________________?