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Engineering Materials

Engineering Materials
Solder is an alloy consisting of

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

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Engineering Materials
Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.

None of these
Equal to
Less than
More than

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Engineering Materials
There are fourteen atoms in a unit cell of

Close packed hexagonal space lattice
None of these
Body centered cubic space lattice
Face centered cubic space lattice

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Engineering Materials
Hardness of lower bainite (tempered martensite) is about

RC 80
RC 65
RC 57
RC 48

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Engineering Materials
The blade of a power saw is made of

Malleable cast iron
Stainless steel
High speed steel
Boron steel

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Engineering Materials
In mottled cast iron, carbon is available in

Free form
Partly in free and partly in combined state
Nodular form
Combined form

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