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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.

Pick out the wrong statement about nucleate boiling ?

A Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface

B Surface temperature is greater than the saturation temperature of the liquid

C Heat transfer from the surface of the liquid is less than that in film boiling

D The temperature is less than that of film boiling

Review Detailed Answer

Correct Answer: The temperature is less than that of film boiling

Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?

A Decreases

B Increases

C Remain same

D May increase or decrease

Review Detailed Answer

Correct Answer: Decreases

With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and _____________ is not affected ?

A Impact strength

B Percent elongation

C Hardness

D Both B & C

Review Detailed Answer

Correct Answer: Impact strength

The bank of tubes located at the back of the domestic refrigerators are the _______________ tubes?

A Refrigerant cooling

B Evaporator

C Condenser

D Throttling

Review Detailed Answer

Correct Answer: Condenser

Mho’s scale of hardness, which consists of 10 standard minerals is used for the measurement of _______________ hardness?

A Scratch

B Indentation

C Dynamic

D Rebound

Review Detailed Answer

Correct Answer: Scratch

Electrometallurgy is not involved in the extraction of ___________________ from its ore?

A Aluminium

B Tin

C Lead

D Both B. & C.

Review Detailed Answer

Correct Answer: Both B. & C.

Screws are specified by their _____________ diameters?

A Minor

B Major

C Pitch

D None of these

Review Detailed Answer

Correct Answer: Major

Cupola produces _________________ iron?

A Pig

B Cast

C Wrought

D Carbon free

Review Detailed Answer

Correct Answer: Cast

A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in _______________ electrons ?

A Lack of free

B Excess of

C Decrease in

D None of these

Review Detailed Answer

Correct Answer: Excess of

In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer will be__________________?

A Conduction

B Radiation

C Natural convection

D Forced convection

Review Detailed Answer

Correct Answer: Radiation

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Pick out the wrong statement about nucleate boiling ?

Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?

With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and _____________ is not affected ?

The bank of tubes located at the back of the domestic refrigerators are the _______________ tubes?

Mho’s scale of hardness, which consists of 10 standard minerals is used for the measurement of _______________ hardness?

Electrometallurgy is not involved in the extraction of ___________________ from its ore?

Screws are specified by their _____________ diameters?

Cupola produces _________________ iron?

A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in _______________ electrons ?

In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer will be__________________?