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Materials and Construction

Materials and Construction
Carbon supply in pack carburising process is in the form of

Charcoal
Hydrocarbon oil
Calcium carbide
Graphite

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Materials and Construction
Mercury is transported in metal containers made of

Nickel
Aluminium
Lead
Iron

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Materials and Construction
Karbate is

An acid resistant material
A mixture of iron dust and saw dust
Carbon impregnated with resin (usually bakelite)
Both B and C

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Materials and Construction
Nitriding of steel is a process for

Spheroidising
Normalising
Case hardening
Annealing

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Materials and Construction
Presence of high amount of silicon in cast iron

Reduces its fluidity
Suppresses the decomposition of Fe₃ C
Increases the formation of graphite
Increases the contraction of the metal

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Materials and Construction
The purpose of nitriding the steel is to

None of these
Harden its surface
Soften its surface
Improve its reliability

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MORE MCQ ON Materials and Construction

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