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Materials and Construction

Materials and Construction
'Age hardening' of duralumin is due to

Both A & B
Neither A nor B
Magnesium
Copper

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Materials and Construction
Spark plugs are made of

Carborundum
Metallic carbides
High alumina ceramic
Corundum

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Materials and Construction
Carbon percentage is the same in cast iron and

High silicon (14%) iron
Pig iron
Wrought iron
Mild steel

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Materials and Construction
Maximum consumption of copper is in

Industrial equipment manufacture
Small scale industries
Electrical industry
Utensil manufacture

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Materials and Construction
The most commonly used resin for making reinforced plastic is

Unsaturated polyester
Nylon-6
Polypropylene
Polyurathane

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Materials and Construction
Evaporators used in caustic soda recovery and production plant are made of

Babbit metal
Wood metal
Monel metal
Gun metal

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