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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.

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is ________________ mm?

A 15

B 25

C 10

D 30

Review Detailed Answer

Correct Answer: 25

Out of the following substances, one ton of ______________ will store the maximum heat for a rise of 30°C in temperature ?

A Steel

B Lignite

C Water

D Lime stone

Review Detailed Answer

Correct Answer: Water

On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is__________________?

A Creep

B Toughness

C Tensile strength

D Fatigue

Review Detailed Answer

Correct Answer: Toughness

‘Dikes’ are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel) ?

A V

B V/2

C 2V

D 3V

Review Detailed Answer

Correct Answer: V

Ammonia gas can be dried by___________________?

A PCl5

B Quick lime

C CaCl2

D Concentrated H2SO4

Review Detailed Answer

Correct Answer: Quick lime

The minimum temperature to which the water can be cooled in a cooling tower is the ______________ temperature of air?

A Ambient

B Dry bulb

C Dew point

D Wet bulb

Review Detailed Answer

Correct Answer: Dew point

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of__________________?

A 23

B 23/2

C 25/2

D 21/3

Review Detailed Answer

Correct Answer: 23

Brazing filler metal used for joining steel plates_________________?

A Melts below the melting points of base metals

B Melts below 300°C

C Is copper phosphorous alloy

D Is copper

Review Detailed Answer

Correct Answer: Melts below the melting points of base metals

The activity of pure hydrogen gas at 1000°C and 5 atm pressure_________________?

A Is always less than 1

B Is always greater than 1

C Can be 5

D Depends on the choice of the standard state

Review Detailed Answer

Correct Answer: Depends on the choice of the standard state

Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?

A °C

B °F

C °K

D °R

Review Detailed Answer

Correct Answer: °F

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is ________________ mm?

Out of the following substances, one ton of ______________ will store the maximum heat for a rise of 30°C in temperature ?

On decreasing the grain size of a polycrystalline material, the property most likely to deteriorate is__________________?

‘Dikes’ are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel) ?

Ammonia gas can be dried by___________________?

The minimum temperature to which the water can be cooled in a cooling tower is the ______________ temperature of air?

If the head is doubled in & centrifugal pump, the power required will increase in the ratio of__________________?

Brazing filler metal used for joining steel plates_________________?

The activity of pure hydrogen gas at 1000°C and 5 atm pressure_________________?

Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?