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Materials and Construction

Materials and Construction
Which of the following heat treatment processes is used for softening the hardened material?

None of these
Tempering
Normalising
Annealing

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Materials and Construction
Sulphuric acid pickling tanks are lined with

Aluminium
Glass
Nickel
Rubber

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Materials and Construction
Babbit metals used for making bearings are

Tin or lead based alloys
Short of antifrictional properties
Yellow metals
Having homogenous microstructure

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Materials and Construction
Which of the following exercises most powerful influence on the mechanical properties of steel?

Carbon
Silicon
Phosphorous
Manganese

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Materials and Construction
Silicon percentage in acid resistant cast iron is about

20
4
14
8

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Materials and Construction
Lead alone is not used in storing equipment, because it

Corrodes easily
None of these
Is having low creep strength
Is very costly

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