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Building Materials

Building Materials
The stones obtained by blasting are used as

Ballast in railways
All listed here
Aggregates for concrete
Road metal

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Building Materials
A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than

15 %
10 %
25 %
20 %

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Building Materials
Softer variety of steel may be obtained by

Crucible process
Bessemer process
Open hearth process
Cementation process

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Building Materials
Galvanising means covering iron with a thin coat of

Tin
Glaze
Zinc
Coal tar

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Building Materials
The harmonious mixing of the clay ingredients, is known as

Weathering
Blending
None of these
Tempering

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Building Materials
The hardest rock is

Marble
Talc
Quartz
Diamond

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