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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.

A butane isomerisation process produces 70 k.mole/hr of pure iso-butane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be_________________?

A 3 kmole/hr

B 4 kmole/hr

C 5 kmole/hr

D 6 kmole/hr

Review Detailed Answer

Correct Answer: 5 kmole/hr

The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal _____________ in the two phases?

A Potential energy

B Intermolecular forces

C Kinetic energy

D Total energy

Review Detailed Answer

Correct Answer: Kinetic energy

Na2SO4. 10H2O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na2SO4. The final concentration of the solute in the solution is 10%. The weight of crystals is________________?

A 20

B 32.2

C 45.35

D 58.65

Review Detailed Answer

Correct Answer: 58.65

At a temperature of 0°K, the molecules of a gas have only _______________ energy?

A Rotational

B Vibrational

C Translational

D None of these

Review Detailed Answer

Correct Answer: Translational

On mixing 56 gm of CaO with 63 gm of HNO3, the amount of Ca(NO3)2 formed is ______________ gm?

A 82

B 164

C 41

D 8.2

Review Detailed Answer

Correct Answer: 82

Atmospheric pressure corresponds to a hydrostatic head of_________________?

A 13.6 cms of Hg

B 34 ft ofH2O

C 1 metre of H2O

D 13.6 metres of Hg

Review Detailed Answer

Correct Answer: 34 ft ofH2O

The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be________________?

A 2M

B M/2

C M

D M/4

Review Detailed Answer

Correct Answer: 2M

Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg?

A 80.38

B 80

C 79.62

D 78.51

Review Detailed Answer

Correct Answer: 79.62

Clausius Clapeyron equation applies to the _____________ process?

A Sublimation

B Melting

C Vaporisation

D All A., B. & C.

Review Detailed Answer

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

80 kg of Na2SO4 (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na2SO4 .10H2O crystals separate out. The weight fraction of Na2SO4 in the remaining solution is_________________?

A 0.00

B 0.18

C 0.24

D 1.00

Review Detailed Answer

Correct Answer: 0.18

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

A butane isomerisation process produces 70 k.mole/hr of pure iso-butane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be_________________?

The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal _____________ in the two phases?

Na2SO4. 10H2O crystals are formed by cooling 100 Kg of 30% by weight aqueous solution of Na2SO4. The final concentration of the solute in the solution is 10%. The weight of crystals is________________?

At a temperature of 0°K, the molecules of a gas have only _______________ energy?

On mixing 56 gm of CaO with 63 gm of HNO3, the amount of Ca(NO3)2 formed is ______________ gm?

Atmospheric pressure corresponds to a hydrostatic head of_________________?

The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be________________?

Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg?

Clausius Clapeyron equation applies to the _____________ process?

80 kg of Na2SO4 (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na2SO4 .10H2O crystals separate out. The weight fraction of Na2SO4 in the remaining solution is_________________?