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Materials and Construction

Materials and Construction
Cold worked steel parts are normally subjected to

Hardening
Shot peening
Normalising
Annealing

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Materials and Construction
Anodic material used for the cathodic protection of underground buried steel pipeline is

Zinc or magnesium
Nickel or copper
Bronze
Brass

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Materials and Construction
Invar contains the highest percentage of

Iron
Vanadium
Tungsten
Cobalt

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Materials and Construction
Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets.

Nickel
Cobalt
Tungsten
Chromium

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Materials and Construction
Aqueous nitric acid is stored in

Steel drum
Cast iron vessel
Stainless steel vessel
Cast iron vessel lined with acid-proof masonry brick

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Materials and Construction
Lead pipes are not safe for carraying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)₂. Lead pipes are readily corroded by

v
Acetic acid
None of these
Dilute HC₁

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