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Materials and Construction

Materials and Construction
Hardened steel is softened by

Annealing
Tempering
Carburising
Normalising

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Materials and Construction
In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of

Wood
Porcelain
Steel
Concrete

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Materials and Construction
__________ is a donor impurity for semi-conductors.

Boron
Antimony
None of these
Gallium

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Materials and Construction
Chromel (Nichrome) is an alloy of

Molybdenum and nickel
Nickel and chromium
Chromium and molybdenum
Chromium and aluminium

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Materials and Construction
Generally __________ are subjected to galvanising (i.e., zinc coating).

Non-metals
Low carbon steels
Non-ferrous metals
Stainless steel

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Materials and Construction
Presence of even very minute amount (say 0.1%) of __________ in copper, reduces its electrical conductivity very seriously.

Antimony
Both B and C
Arsenic
Bismuth

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MORE MCQ ON Materials and Construction

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