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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

Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by________________?
A Natural aeration of water stream
B Photosynthetic action of algae
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
Thermal pollution due to excessive heat & temperature in the working place causes__________________?
A Reduction in working efficiency of manpower
B Fatigue
C High breathing rate
D All A., B. & C.
Correct Answer: All A., B. & C.
Irradiation of water by ultraviolet light of suitable wavelength is commonly used for disinfection of water in___________________?
A Food industry
B Municipal sewage treatment
C Petroleum refinery
D Iron & steel plant
Correct Answer: Food industry
Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes________________?
A Blood poisoning
B Anaemia
C Nervous system disorder
D All A., B. and C.
Correct Answer: All A., B. and C.
Pick out the one which is not a chemical coagulant ?
A Aluminium sulphate
B Ferrous sulphate
C Hydrated lime
D Chloramine
Correct Answer: Chloramine
Presence of dissolved impurities of ______________ is responsible for the red brownish color of water?
A Carbonates
B Bi-carbonates
C Iron & manganese
D Arsenic
Correct Answer: Iron & manganese
The concentration of water vapour in troposphere, which depends upon the altitude & temperature, varies in the range of zero to ______________ percent?
A 1
B 4
C 8
D 12
Correct Answer: 4
Turbidity of water is an indication of the presence of__________________?
A Suspended inorganic matter
B Dissolved solids
C Floating solids
D Dissolved gases
Correct Answer: Suspended inorganic matter
Variables affecting the rate of homogeneous reactions are___________________?
A Pressure and temperature only
B Temperature and composition only
C Pressure and composition only
D Pressure, temperature and composition
Correct Answer: Pressure, temperature and composition
In a zero order reaction, reactants concentration does not change with time and the_________________?
A Time for half change is half the time taken for completion of the reaction
B Time for half change is independent of the initial concentration
C Time for completion of the reaction is independent of the initial concentration
D Reaction rate is trebled when the initial concentration is trebled
Correct Answer: Time for half change is half the time taken for completion of the reaction
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