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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.

Which of the following has the minimum value of COP for a given refrigeration effect ?

A Reverse Carnot cycle

B Ordinary vapour-compression cycle

C Vapour-compression process with a reversible expansion engine

D Air refrigeration cycle

Review Detailed Answer

Correct Answer: Air refrigeration cycle

Partial molar free energy of an element A in solution is same as its__________________?

A Chemical potential

B Activity

C Fugacity

D Activity co-efficient

Review Detailed Answer

Correct Answer: Chemical potential

Entropy of the system decreases, when_______________?

A Snow melts into water

B A gas expands spontaneously from high pressure to low pressure

C Water is converted into ice

D Both B. & C

Review Detailed Answer

Correct Answer: Both B. & C

A gas shows deviation from ideal behaviour at______________?

A Low pressure and high temperature

B Low pressure and low temperature

C Low temperature and high pressure

D High temperature and high pressure

Review Detailed Answer

Correct Answer: Low temperature and high pressure

The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is________________?

A (∂T/∂V)S = – (∂P/∂S)V

B (∂S/∂P)T = – (∂V/∂T)P

C (∂V/∂S)P = (∂T/∂P)S

D (∂S/∂V)T = (∂P/∂T)V

Review Detailed Answer

Correct Answer: (∂S/∂V)T = (∂P/∂T)V

Specific heat of a gas for a reversible adiabatic process is________________?

A Negative

B Zero

C Infinity

D None of these

Review Detailed Answer

Correct Answer: Zero

Heat requirement for decomposition of a compound into its elements is _____________ that is evolved during the formation of that compound from its elements?

A The same

B Less than

C Greater than

D Different than

Review Detailed Answer

Correct Answer: The same

For an ideal gas, the chemical potential is given by______________?

A RT d ln P

B R d ln P

C R d ln f

D None of these

Review Detailed Answer

Correct Answer: RT d ln P

The thermodynamic law, PVy = constant, is not applicable in case of______________?

A Ideal compression of air

B Free expansion of an ideal gas

C Adiabatic expansion of steam in a turbine

D Adiabatic compression of a perfect gas

Review Detailed Answer

Correct Answer: Free expansion of an ideal gas

If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will___________________?

A Increase

B Decrease

C Remain unaltered

D Increase or decrease; depends on the particular reaction

Review Detailed Answer

Correct Answer: Remain unaltered

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Which of the following has the minimum value of COP for a given refrigeration effect ?

Partial molar free energy of an element A in solution is same as its__________________?

Entropy of the system decreases, when_______________?

A gas shows deviation from ideal behaviour at______________?

The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is________________?

Specific heat of a gas for a reversible adiabatic process is________________?

Heat requirement for decomposition of a compound into its elements is _____________ that is evolved during the formation of that compound from its elements?

For an ideal gas, the chemical potential is given by______________?

The thermodynamic law, PVy = constant, is not applicable in case of______________?

If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will___________________?