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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.

In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is__________________?

A Independent of temperature

B Increases with rise in pressure

C Increased with decrease in pressure

D Unchanged with pressure changes

Review Detailed Answer

Correct Answer: Increases with rise in pressure

At 100°C, water and methylcyclohexane both have vapour pressures of 1 atm. Also at 100°C, the latent heats of vaporisation of these compounds are 40.63 kJ/mole for water and 31.55 kJ/mole for methylcyclohexane. The vapour pressure of water at 150°C is 4.69 atm. At 150°C, the vapour pressure of methylcyclohexane would be expected to be_________________?

A Significantly less than 4.69 atm

B Nearly equal to 4.69 atm

C Significantly more than 4.69 atm

D Indeterminate due to lack of data

Review Detailed Answer

Correct Answer: Significantly more than 4.69 atm

The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is___________________?

A Less than 100°C

B 100°C

C Between 100 and 110°C

D 110.6°C

Review Detailed Answer

Correct Answer: Between 100 and 110°C

Assume that benzene is insoluble in water. The normal boiling points of benzene and water are 80.1 and 100°C respectively. At a pressure of 1 atm, the boiling point of a mixture of benzene and water is__________________?

A 80.1°C

B Less than 80.1°C

C 100°C

D Greater than 80.1°C but less than 100°C

Review Detailed Answer

Correct Answer: 80.1°C

For an ideal gas, the compressibility factor________________?

A Decreases with pressure rise

B Is unity at all temperature

C Is unity at Boyle’s temperature

D Zero

Review Detailed Answer

Correct Answer: Is unity at all temperature

An Azeotropic solution of two liquids has boiling point lower than either of them, when it_____________?

A Is saturated

B Is unsaturated

C Shows negative deviation from Raoult’s law

D Shows positive deviation from Raoult’s law

Review Detailed Answer

Correct Answer: Shows positive deviation from Raoult’s law

A vapor whose partial pressure is less than its equilibrium vapor pressure is called the _____________ vapor?

A Saturated

B Superheated

C Unsaturated

D Dry gaseous

Review Detailed Answer

Correct Answer: Superheated

Specific gravity on API scale is given by the relation (where, G = specific gravity at 15.5°C) ?

A °API = 200(G – 1)

B °API = (141.5/G) – 131.5

C °API = (140/G) – 130

D °API = 145 – (145/G)

Review Detailed Answer

Correct Answer: °API = (141.5/G) – 131.5

Internal energy of a substance comprises of the _____________ energy?

A Vibrational

B Rotational

C Translational

D All A., B. & C.

Review Detailed Answer

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

Isotonic solutions must have the same__________________?

A Viscosity

B Molar concentration

C Normality

D Critical temperature

Review Detailed Answer

Correct Answer: Molar concentration

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is__________________?

Assume that benzene is insoluble in water. The normal boiling points of benzene and water are 80.1 and 100°C respectively. At a pressure of 1 atm, the boiling point of a mixture of benzene and water is__________________?

For an ideal gas, the compressibility factor________________?

An Azeotropic solution of two liquids has boiling point lower than either of them, when it_____________?

A vapor whose partial pressure is less than its equilibrium vapor pressure is called the _____________ vapor?

Specific gravity on API scale is given by the relation (where, G = specific gravity at 15.5°C) ?

Internal energy of a substance comprises of the _____________ energy?

Isotonic solutions must have the same__________________?