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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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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.

All Topics  9594

Pick out the exothermic reaction out of the following ?
A C + H2O = CO + H2
B CaC2 + H2O = Ca(OH)2 + C2H2
C MgCO3 = MgO + CO2
D All (A), B. and (C)
Correct Answer: CaC2 + H2O = Ca(OH)2 + C2H2
Which of the following, when pyrolysed, produces Perchloroethylene ?
A Ethylene dichloride
B Chlorobenzene
C Carbon tetrachloride
D Chlorinated paraffin
Correct Answer: Carbon tetrachloride
Magnesium and calcium ______________ cause temporary hardness of water ?
A Carbonates
B Bicarbonates
C Phosphates
D Sulphates
Correct Answer: Bicarbonates
Tall oil obtained as a by-product from the black liquor recovery is________________?
A A black, sticky & viscous liquid
B Used in the manufacture of greases, emulsions & soaps
C Composed mainly of rosin & fatty acids
D All A , B. & C.
Correct Answer: All A , B. & C.
Pick out the wrong statement pertaining to nitric acid ?
A About 90% of nitric acid is manufactured by Ostwald’s process
B It is a strong mono basic acid which reacts with almost all the metals except noble metals
C Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
D Arc process of nitric acid manufacture is economical as compared to Ostwald’s process
Correct Answer: Arc process of nitric acid manufacture is economical as compared to Ostwald’s process
Which oil is preferred for paint manufacture ?
A Drying oil
B Non-drying oil
C Semi-drying oil
D
Correct Answer: Drying oil
Thorium is mainly used _______________?
A For the manufacture of gas mantles
B As a fissile fuel in a nuclear reactor
C In the manufacture of hydrogen bomb
D In the treatment of cancer
Correct Answer: For the manufacture of gas mantles
Drinking (potable) water treatment does not involve __________________?
A Coagulation
B Sedimentation
C Softening
D Disinfection
Correct Answer: Softening
Removal of dirt/soil by soaps or detergent does not involve the _______________ of soil ?
A Emulsification
B Dispersion
C Precipitation
D Wetting
Correct Answer: Precipitation
The basic difference between vegetable oils and fats is in their ___________________?
A Density
B Chemical properties
C Physical state
D Composition
Correct Answer: Physical state
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