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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.

Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of _____________________?

A Sublimation

B Fusion

C Transition

D Vaporisation

Review Detailed Answer

Correct Answer: Transition

Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is ___________________?

A 0

B ∞

C +ve

D -ve

Review Detailed Answer

Correct Answer: 0

To obtain integrated form of Clausius-Clapeyron equation, ln (P2/P1) = (ΔHV/R) (1/T1 – 1/T2) from the exact Clapeyron equation, it is assumed that the____________________?

A Volume of the liquid phase is negligible compared to that of vapour phase

B Vapour phase behaves as an ideal gas

C Heat of vaporisation is independent of temperature

D All A , B. & C.

Review Detailed Answer

Correct Answer: All A , B. & C.

At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?

A μ° + RT ln f

B μ°+ R ln f

C μ° + T ln f

D μ° + R/T ln f

Review Detailed Answer

Correct Answer: μ° + RT ln f

Charles’ law for gases states that__________________?

A V/T = Constant

B V ∝ 1/T

C V ∝ 1/P

D PV/T = Constant

Review Detailed Answer

Correct Answer: V/T = Constant

______________ Equation predicts the activity co-efficient from experimental data ?

A Lewis-Randall

B Margules

C Van Laar

D Both B. & C.

Review Detailed Answer

Correct Answer: Both B. & C.

The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n- octane into pure compounds each at 1 atm is__________________?

A -2 RT ln 0.5

B -RT ln 0.5

C 0.5 RT

D 2 RT

Review Detailed Answer

Correct Answer: -RT ln 0.5

At normal boiling point, molar entropy of vaporisation is _____________ Joule/K°.mole?

A 72

B 92

C 142

D 192

Review Detailed Answer

Correct Answer: 92

A large iceberg melts at the base, but not at the top, because of the reason that_________________?

A Ice at the base contains impurities which lowers its melting point

B Due to the high pressure at the base, its melting point reduces

C The iceberg remains in a warmer condition at the base

D All A, B. and C

Review Detailed Answer

Correct Answer: Due to the high pressure at the base, its melting point reduces

In an ideal gas mixture, fugacity of a species is equal to its___________________?

A Vapor pressure

B Partial pressure

C Chemical potential

D None of these

Review Detailed Answer

Correct Answer: Partial pressure

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of _____________________?

Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is ___________________?

To obtain integrated form of Clausius-Clapeyron equation, ln (P2/P1) = (ΔHV/R) (1/T1 – 1/T2) from the exact Clapeyron equation, it is assumed that the____________________?

At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?

Charles’ law for gases states that__________________?

______________ Equation predicts the activity co-efficient from experimental data ?

The theoretical minimum work required to separate one mole of a liquid mixture at 1 atm, containing 50 mole % each of n- heptane and n- octane into pure compounds each at 1 atm is__________________?

At normal boiling point, molar entropy of vaporisation is _____________ Joule/K°.mole?

A large iceberg melts at the base, but not at the top, because of the reason that_________________?

In an ideal gas mixture, fugacity of a species is equal to its___________________?