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Engineering Materials

Engineering Materials
Which of the following is an amorphous material?

Lead
Silver
Mica
Glass

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Engineering Materials
Corundum contains more than 95%

Al2O3
SiO2
Steel
MgO

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Engineering Materials
Blast furnace is used to produce

Pig iron
Wrought iron
Cast iron
Steel

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Engineering Materials
The surface hardness of the following order is achieved by nitriding operation

1500 VPN
250 VPN
1000 to 1100 VPN
600 VPN

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Engineering Materials
By severely deforming a metal in a particular direction it becomes

Malleable
Ductile
Homogeneous
Anisotropic

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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.

None of these
Both A and B
Free graphite
Cementite

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