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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.

Cp is expressed in S.I. unit as_______________?

A J/kg.°K

B 0°K

C W/m2.°C

D W/m.°K

Review Detailed Answer

Correct Answer: J/kg.°K

Increasing the temperature of an aqueous solution will cause decrease in its________________?

A Molality

B Mole fraction

C Weight percent

D Molarity

Review Detailed Answer

Correct Answer: Molarity

A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

A 13728 J

B 19206 J

C 4576 J

D 12712 J

Review Detailed Answer

Correct Answer: 19206 J

Enthalpy of formation of NH3 is – 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to _____________ kJ/kg. mole?

A 46

B 92

C -23

D -92

Review Detailed Answer

Correct Answer: 92

Gases diffuse faster compared to liquids because of the reason that the liquid molecules_________________?

A Are held together by stronger inter-molecular forces

B Move faster

C Have no definite shape

D Are heavier

Review Detailed Answer

Correct Answer: Are held together by stronger inter-molecular forces

If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will_________________?

A Be reduced to 1/4th

B Increase four times

C Increase two times

D None of these

Review Detailed Answer

Correct Answer: Increase two times

Heat of reaction is not influenced by__________________?

A The route/method through which final products are obtained

B The physical state (e.g., solid, liquid or gaseous) of reactants and products

C Whether the reaction is carried out at constant temperature or constant pressure

D None of these

Review Detailed Answer

Correct Answer: The route/method through which final products are obtained

A ‘limiting reactant’ is the one, which decides the ____________ in the chemical reaction?

A Equilibrium constant

B Conversion

C Rate constant

D None of these

Review Detailed Answer

Correct Answer: Conversion

At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to___________________?

A Decrease in mean free path

B Increased collision rate among molecules

C Increase in molecular attraction

D Increase in average molecular speed

Review Detailed Answer

Correct Answer: Increase in molecular attraction

1 torr is equivalent to_________________?

A 1 mm Hg

B 1 Pascal

C 1 atm

D 1 mm wc

Review Detailed Answer

Correct Answer: 1 mm Hg

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Cp is expressed in S.I. unit as_______________?

Increasing the temperature of an aqueous solution will cause decrease in its________________?

A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

Enthalpy of formation of NH3 is – 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to _____________ kJ/kg. mole?

Gases diffuse faster compared to liquids because of the reason that the liquid molecules_________________?

If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will_________________?

Heat of reaction is not influenced by__________________?

A ‘limiting reactant’ is the one, which decides the ____________ in the chemical reaction?

At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to___________________?

1 torr is equivalent to_________________?