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Engineering Materials

Engineering Materials
The crystal structure of brass is

C.C.
Orthorhombic crystalline structure
H.C.P.
F.C.C.

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Engineering Materials
Corrosion resistance of steel is increased by adding

Tungsten and sulphur
Nickel and molybdenum
Aluminium and zinc
Chromium and nickel

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Engineering Materials
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Silicon
Phosphorus
Sulphur
Manganese

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Engineering Materials
The molecules in a solid move

Back and forth like tiny pendulums
In a haphazard way
In a random manner
In circular motion

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Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Hypereutectic cast irons
None of these
Eutectic cast irons
Hypoeutectic cast irons

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Engineering Materials
Cemented carbide tools are not found to be suitable for cutting

Aluminium
Steel
Cast iron
Brass

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