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Materials and Construction

Materials and Construction
Constantan used in thermocouples is an alloy of

Lead & tin
Copper & aluminium
Iron & copper
None of these

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Materials and Construction
Caustic soda can be stored in __________ drums.

Cast iron
Steel
Gun metal
Brass

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Materials and Construction
White cast iron is not

Whitish in color
Brittle
Strong and hard
Malleable

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

Polypropylene
Nylon-6
Polyurathane
Unsaturated polyester

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Materials and Construction
Carbon is present in steel wholly in the

Free state as graphite
Both A & B
Neither A nor B
Combined form

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Materials and Construction
The presence of impurities in iron

Decreases its melting point
Makes it malleable
Increases its melting point
Does not affect its melting point

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