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Building Materials

Building Materials
The stones obtained by blasting are used as

Road metal
Aggregates for concrete
Ballast in railways
All listed here

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Building Materials
Quick lime is

None of these
Calcium hydroxide
Calcium oxide
Calcium carbonate

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Building Materials
Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as

Quick setting cement
Low heat Portland cement
White cement
Rapid hardening cement

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Building Materials
Three basic raw materials which are needed in large quantities for production of steel are

Iron ore, carbon and sulphur
Iron ore, carbon and lime stone
Iron ore, coal and lime stone
Iron ore, coal and sulphur

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Building Materials
After storage, the strength of cement

Remains same
Increases
May increase or decrease
Decreases

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Building Materials
Depending on the chemical composition and mechanical properties, iron may be classified as

Cast iron
Steel
Wrought iron
All of these

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