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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.

The heat evolved in the combustion of benzene is represented by the equation: C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be _____________ kJ/kgmole?

A +816.15

B +1632.3

C -1632.3

D -2448.45

Review Detailed Answer

Correct Answer: -1632.3

A solution having a pH value of 5 is less acidic than the one having a pH value of 2 by a factor of ________________?

A 3

B 100

C 1000

D None of these

Review Detailed Answer

Correct Answer: 100

Heat of ____________ of a fuel is called its calorific value?

A Formation

B Combustion

C Reaction

D Vaporisation

Review Detailed Answer

Correct Answer: Combustion

The gravimetric (i.e., by weight) composition of a vapor saturated gas is independent of the_______________?

A Nature of both the gas & the liquid

B Temperature

C Total pressure

D None of these

Review Detailed Answer

Correct Answer: None of these

The heats of vaporisation of CS2, C2H5OH &H2O are 26.8, 38.6 & 40.6 KJ/kg.mole respectively. The order of decreasing inter-molecular forces in these liquids is________________?

A H2O > C2H5OH > CS2

B CS2 > C2H5OH > H2O

C H2O > CS2 > C2H5OH

D CS2 > H2O > C2H5OH

Review Detailed Answer

Correct Answer: H2O > C2H5OH > CS2

Viscosity of 1 centipoise is equal to 1 Centistoke in case of________________?

A Water

B Mercury

C Carbon tetrachloride

D None of these

Review Detailed Answer

Correct Answer: Water

Pick out the wrong unit conversion of temperature?

A °R = 273 + °F

B Temperature difference of 1°K = 1°C = 9/5°F

C °C = (F- 32) × 0.555

D °F = (°C + 17.778) × 1.8

Review Detailed Answer

Correct Answer: °R = 273 + °F

A vapor that exists above its critical temperature is termed as a _____________ vapor?

A Saturated

B Unsaturated

C Gaseous

D Sub-cooled

Review Detailed Answer

Correct Answer: Gaseous

The amount of Zn (atomic weight = 65) required to form 224 c.c. of H2 at N.T.P. on treatment with dilute H2SO4will be _____________ gm?

A 0.065

B 0.65

C 6.5

D 65

Review Detailed Answer

Correct Answer: 0.65

The number of water molecules present in a drop of water weighing 0.018 gm is 6.023 × __________?

A 1026

B 1023

C 1020

D 1019

Review Detailed Answer

Correct Answer: 1020

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

The heat evolved in the combustion of benzene is represented by the equation: C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be _____________ kJ/kgmole?

A solution having a pH value of 5 is less acidic than the one having a pH value of 2 by a factor of ________________?

Heat of ____________ of a fuel is called its calorific value?

The gravimetric (i.e., by weight) composition of a vapor saturated gas is independent of the_______________?

The heats of vaporisation of CS2, C2H5OH &H2O are 26.8, 38.6 & 40.6 KJ/kg.mole respectively. The order of decreasing inter-molecular forces in these liquids is________________?

Viscosity of 1 centipoise is equal to 1 Centistoke in case of________________?

Pick out the wrong unit conversion of temperature?

A vapor that exists above its critical temperature is termed as a _____________ vapor?

The amount of Zn (atomic weight = 65) required to form 224 c.c. of H2 at N.T.P. on treatment with dilute H2SO4will be _____________ gm?

The number of water molecules present in a drop of water weighing 0.018 gm is 6.023 × __________?