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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

Tin vessels are corroded by____________________?
A Anhydrous ammonia
B Aromatic solvents
C Synthetic detergent solution
D None of these
Correct Answer: None of these
Lead pipes are not safe for carrying drinking water because water containing dissolved oxygen attacks lead thereby forming poisonous Pb (OH)2. Lead pipes are readily corroded by_________________?
A Dilute HCI
B Acetic acid
C Concentrated H2SO4
D None of these
Correct Answer: Acetic acid
Presence of high amount of silicon in cast iron________________?
A Suppresses the decomposition of Fe3C
B Increases the formation of graphite
C Increases the contraction of the metal
D Reduces its fluidity
Correct Answer: Increases the formation of graphite
The main purpose of galvanising iron sheets is to___________________?
A Harden the surface
B Increase its glossiness and lustre
C Prevent the action of water
D Prevent the action of oxygen
Correct Answer: Prevent the action of water
The temperature at which new grains are formed in the metal is called the ______________ temperature?
A Eutectic
B Recrystallisation
C Upper critical
D Lower critical
Correct Answer: Recrystallisation
Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (1/20th of ordinary metals) ?
A Invar
B Constantan
C Chromel
D Alumel
Correct Answer: Invar
Caustic soda can be stored in _____________ drums?
A Steel
B Cast iron
C Brass
D Gun metal
Correct Answer: Steel
Addition of ______________ to the steel helps in increasing the residual magnetism in steel used for making magnets?
A Chromium
B Nickel
C Tungsten
D Cobalt
Correct Answer: Cobalt
The material of construction of pressure mills used for squeezing out the juice from sugar cane is__________________?
A Stainless steel
B Cast iron
C Mild steel
D Monel
Correct Answer: Cast iron
Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and_________________?
A Moving mercury and graphite
B Graphite and moving mercury
C Moving mercury and carbon
D Moving mercury and crimped steel wire
Correct Answer: Graphite and moving mercury
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