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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.

1 ata is equivalent to_________________?

A 1 atm

B 10 torr

C 0.98 Pascal

D 1 kgf/cm2

Review Detailed Answer

Correct Answer: 1 kgf/cm2

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.

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

1 ata is equivalent to_________________?

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?