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Engineering Materials

Engineering Materials
Which of the following is an amorphous material?

Silver
Mica
Lead
Glass

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Engineering Materials
The presence of sulphur in pig iron makes

It hard
The casting unsound
It brittle
It easily machinable

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Engineering Materials
The hardness of steel increases if it contains

Austenite
Cementite
Martensite
Pearlite

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Engineering Materials
Bronze is an alloy of

Copper, tin and zinc
Copper and tin
None of these
Copper and zinc

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Engineering Materials
Solder is an alloy consisting of

Tin, antimony, copper
Tin and lead
Tin and copper
Lead and zinc

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Engineering Materials
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.

Both A and B
Free graphite
None of these
Cementite

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