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Engineering Materials

Engineering Materials
Maximum percentage of carbon in ferrite is

0.001
0.00025
0.0025
0.0006

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Engineering Materials
Which of the following metal is used for nuclear energy?

Niobium
All of these
Thorium
Uranium

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Engineering Materials
The presence of sulphur in pig iron makes

It easily machinable
It hard
It brittle
The casting unsound

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Engineering Materials
Which of the following metal shrinks most from molten state to solid state?

Cast iron
Cast steel
Admiralty metal
Brass

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Engineering Materials
A reversible change in the atomic structure of steel with corresponding change in the properties is known as

Physical change
Allotropic change
Solidus change
Molecular change

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Engineering Materials
Pearlite consists of

13% carbon and 87% ferrite
13% cementite and 87% ferrite
13% ferrite and 87% cementite
6.67% carbon and 93.33% iron

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