Engineering Chemistry Boiler Feed Water Online Exam Quiz
Engineering Chemistry Boiler Feed Water GK Quiz. Question and Answers related to Engineering Chemistry Boiler Feed Water. MCQ (Multiple Choice Questions with answers about Engineering Chemistry Boiler Feed Water
Foaming is caused by the formation of ___________
Options
A : Acids
B : Alcohols
C : Oils and alkalis
D : Ketones
The propulsion of water into steam drum by extremely rapid, almost explosive boiling of water at the heating surface is called ___________
Options
A : Foaming
B : Priming
C : Corrosion
D : Caustic embrittlement
The phenomenon during which the boiler material becomes brittle due to accumulation of caustic substances is known as ___________
Options
A : Foaming
B : Priming
C : Corrosion
D : Caustic embrittlement
Which of the following should not be a composition of boiler-feed water?
Options
A : Hardness should be below 0.2ppm
B : Its caustic alkalinity should lie between 0.15 to 0.45 ppm
C : Its soda alkalinity should be 0.45-1 ppm
D : Its caustic alkalinity should be 1.5-2 ppm
Water is mainly used in boilers for the generation of ________________
Options
A : Power
B : Electricity
C : Steam
D : Current
Which of the following is not a result of the excess of impurity in boiler-feed?
Options
A : Scale and sludge formation
B : Decomposition
C : Corrosion, priming and foaming
D : Caustic embrittlement
Which of the following option is incorrect about the sludges?
Options
A : Sludges are soft, loose and slimy precipitate
B : They are non-adherent deposits and can be easily removed
C : Formed generally at heated portions of the boiler
D : Can be removed by blow down operation
If the precipitate formed is soft, loose and slimy, these are __________ and if the precipitate is hard and adhering on the inner wall, it is called _____________
Options
A : Sludges, scale
B : Scale, sludges
C : Sludges, rodent
D : Scale, rodent
Corrosion is the decay or disintegration of boiler body material either due to chemical or electrochemical reaction with environment.
Options
A : True
B : False
C :
D :
The scales decrease the efficiency of boiler and chances of explosions are also there.
Options
A : True
B : False
C :
D :
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