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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.

Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are _______________ respectively ?

A 70 & 30

B 30 & 70

C 50 & 50

D 90 & 10

Review Detailed Answer

Correct Answer: 70 & 30

Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by _____________ have residual stresses ?

A Forging

B Cold rolling

C Hot rolling

D Casting

Review Detailed Answer

Correct Answer: Cold rolling

The excess air required for the combustion of pulverized coal is of the order of about _______________ percent ?

A 5

B 15

C 30

D 45

Review Detailed Answer

Correct Answer: 5

The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?

A Evaporative capacity

B Evaporation efficiency

C Thermal efficiency

D Steam load

Review Detailed Answer

Correct Answer: Evaporative capacity

Pick out the wrong statement ?

A A ferromagnetic material becomes paramagnetic above the ‘Curie temperature’

B Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic

C Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and

D Tungsten steel and alnico are not hard magnetic materials

Review Detailed Answer

Correct Answer: Tungsten steel and alnico are not hard magnetic materials

Pick out the wrong statement?

A Copper is the metal having the highest electronic conductivity

B Hardenability & Weldability of metals are inversely related

C Covalent bonding formed by sharing of electrons is present in all semi-conductor materials

D Glass transition temperature applies to ‘polymers’ but not to ‘glasses’

Review Detailed Answer

Correct Answer: Copper is the metal having the highest electronic conductivity

Pick out the wrong statement about the machinability of metals. Machinability of a metal ?

A Decreases with increase in strain hardening tendencies

B Decreases with increase in hardness, in general

C Depend on the composition, microstructure and physical & mechanical properties

D Decreases with increases in tensile strength & decrease in grain size

Review Detailed Answer

Correct Answer: Decreases with increases in tensile strength & decrease in grain size

Increasing the carbon content of steel_________________?

A Reduces the upper shelf energy

B Increasing the ductility transition temperature

C Decreases brittleness

D Decreases hardness

Review Detailed Answer

Correct Answer: Increasing the ductility transition temperature

The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?

A Carbon

B Manganese

C Both A nor B

D Neither A nor B

Review Detailed Answer

Correct Answer: Carbon

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________________?

A Black

B Silver grey

C Green

D Yellow

Review Detailed Answer

Correct Answer: Silver grey

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Steam condenser tubes are made of admiralty brass, in which percentage of zinc & copper are _______________ respectively ?

Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by _____________ have residual stresses ?

The excess air required for the combustion of pulverized coal is of the order of about _______________ percent ?

The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?

Pick out the wrong statement ?

Pick out the wrong statement?

Pick out the wrong statement about the machinability of metals. Machinability of a metal ?

Increasing the carbon content of steel_________________?

The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________________?