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Quiz 1
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Q.1
Which of the following statements is not true about white cast iron?
a) It has a silvery-white colour
b) White cast iron is quite hard
c) It melts with great difficulty
d) It can be used for delicate castings
Q.2
In which type of casting, molten metal is poured into moulds which keep on rotating?
a) Centrifugal casting
b) Chilled casting
c) Hollow casting
d) Sand casting
Q.3
Which of the following is not a property of cast iron?
a) Cast iron is hard but brittle
b) Cast iron can be magnetised
c) It does not rust readily
d) Cast iron is not ductile
Q.4
The manganese content in cast iron should be kept below __________
a) 0.75%
b) 1%
c) 1.5%
d) 1.75%
Q.5
Which variety of cast iron is obtained by melting cast iron with wrought iron scrap?
a) Mottled cast iron
b) Chilled cast iron
c) Malleable cast iron
d) Toughened cast iron
Q.6
In which type of casting, the outer surface is made hard while the inner surface remains relatively soft?
a) Hollow casting
b) Sand casting
c) Chilled casting
d) Die casting
Q.7
The process of converting pig iron into wrought iron by stirring in the molten state is called as _________
a) Puddling
b) Refining
c) Rolling
d) Shingling
Q.8
The process of puddling is carried out in a ________
a) Blast furnace
b) Flask
c) Cupola furnace
d) Reverberatory furnace
Q.9
The material obtained at the end of the shingling process is called as ________
a) Flux
b) Slag
c) Bloom
d) Fuse
Q.10
Aston’s process is used to manufacture _________
a) Steel
b) Wrought iron
c) Pig iron
d) Cast iron
Q.11
Which of the following is not a property pf wrought iron?
a) Wrought iron is ductile and malleable
b) It fuses easily
c) The specific gravity of wrought iron is about 7.8
d) Wrought iron can be easily forged and welded
Q.12
Corrosion of ferrous metals is known as ___________
a) Enamelling
b) Rusting
c) Galvanising
d) Coal Tarring
Q.13
Which metal is used in the galvanisation of iron in order to prevent it from rusting?
a) Zinc
b) Sodium
c) Copper
d) Silver
Q.14
Which chemical is used in the method of parkerizing, adopted to prevent corrosion?
a) Alum
b) Borax
c) Pareo
d) Vitriol
Q.15
Dust of pure _________ is used to cover the article to be treated for corrosion in the method of sherardising.
a) Platinum
b) Zinc
c) Copper
d) Barium
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