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Study MCQ
WorkShop Calculation and Science
Module - 5: HEAT TREATMENT
Set 3
Set 3
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Q12820
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Which is a kind of surface hardening process?
A
Cementide
B
Ferrite
C
Nitriding
D
Tempering
Q12821
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How much time is allowed normally in soaking zone for a 10mm thick metal piece while hardening?
A
5 minutes
B
10 minutes
C
15 minutes
D
20 minutes
Q12822
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What is colour of a metal piece when heated to 250 Degree C while doing the tempering process?
A
Blue
B
Brown
C
Purple
D
Pale
Q12823
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What is the purpose of tempering a steel?
A
To reduce the brittleness
B
To remove the ductility
C
To increase the hardness
D
To increase the brittleness
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