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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.

The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is__________________?

A Less pronounced

B More pronounced

C Equal

D Data insufficient, can’t be predicted

Review Detailed Answer

Correct Answer: More pronounced

For spontaneous changes in an isolated system (S = entropy) ___________________?

A ds = 0

B ds <0

C ds > 0

D ds = Constant

Review Detailed Answer

Correct Answer: ds > 0

What happens in a reversible adiabatic expansion process ?

A Heating takes place

B Cooling takes place

C Pressure is constant

D Temperature is constant

Review Detailed Answer

Correct Answer: Cooling takes place

For an exothermic reaction ____________________?

A Only enthalpy change (ΔH) is negative

B Only internal energy change (ΔE) is negative

C Both ΔH and ΔE are negative

D Enthalpy change is zero

Review Detailed Answer

Correct Answer: Both ΔH and ΔE are negative

Number of phases in a colloidal system is_____________________?

A 1

B 2

C 3

D 4

Review Detailed Answer

Correct Answer: 2

Joule-Thomson effect i.e., a throttling process is a constant _____________ process?

A Entropy

B Temperature

C Internal energy

D Enthalpy

Review Detailed Answer

Correct Answer: Enthalpy

Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a __________________?

A Straight line

B Sine curve

C Parabola

D Hyperbola

Review Detailed Answer

Correct Answer: Straight line

Which of the following is Virial equation of state ?

A (p + a/V2)(V – b) = nRT

B PV = nRT

C PV = A + B/V + C/V2 + D/V3 + …

D None of these

Review Detailed Answer

Correct Answer: PV = A + B/V + C/V2 + D/V3 + …

In a reversible process__________________?

A Tds = dE + dW

B dE – dW = Tds

C dW – dE = Tds

D Tds – dW + dE >0

Review Detailed Answer

Correct Answer: Tds = dE + dW

Specific ____________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.)?

A Entropy

B Internal energy

C Enthalpy

D Gibbs free energy

Review Detailed Answer

Correct Answer: Gibbs free energy

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is__________________?

For spontaneous changes in an isolated system (S = entropy) ___________________?

What happens in a reversible adiabatic expansion process ?

For an exothermic reaction ____________________?

Number of phases in a colloidal system is_____________________?

Joule-Thomson effect i.e., a throttling process is a constant _____________ process?

Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a __________________?

Which of the following is Virial equation of state ?

In a reversible process__________________?

Specific ____________ does not change during a phase change (e.g. sublimation, melting, vaporisation etc.)?