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Materials and Construction

Materials and Construction
Which of the following is not an alloy of copper?

Pewter metal
Muntz metal
Admirability gun metal
German silver

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Materials and Construction
The main purpose of galvanising iron sheets is to

Increase its glossiness and lustre
Harden the surface
Prevent the action of water
Prevent the action of oxygen

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Materials and Construction
Aluminium as a material of construction suffers from the disadvantage of

Very high cost
Very low strength to weight ratio
Rather low tensile strength
Scarce availability

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Materials and Construction
Which of the following is the lightest of engineering metals?

Tin
Magnesium
Aluminium
Titanium

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Materials and Construction
__________ is added in low carbon steel to raise its yield point.

Silicon
Manganese
Phosphorous
Sulphur

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Materials and Construction
High carbon steel contains more than __________ percent carbon.

2.8
2.2
2.5
0.5

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