Building Materials The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as Open hearth process Cementation process Crucible process Bessemer process Open hearth process Cementation process Crucible process Bessemer process ANSWER DOWNLOAD EXAMIANS APP
Building Materials Manganese steels All listed here Possess high electrical resistance Are non-magnetic Possess low coefficient of expansion All listed here Possess high electrical resistance Are non-magnetic Possess low coefficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Building Materials Which of the following represents a metamorphic rock? (i) Slate (ii) Shale (iii) Quartzite Both (ii) and (iii) All (i), (ii) and (iii) Only (iii) Both (i) and (iii) Both (ii) and (iii) All (i), (ii) and (iii) Only (iii) Both (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Building Materials Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as White or forge pig Bessemer pig Grey or foundry pig Mottled pig White or forge pig Bessemer pig Grey or foundry pig Mottled pig ANSWER DOWNLOAD EXAMIANS APP
Building Materials The stones obtained by blasting are used as All listed here Road metal Ballast in railways Aggregates for concrete All listed here Road metal Ballast in railways Aggregates for concrete ANSWER DOWNLOAD EXAMIANS APP
Building Materials Three basic raw materials which are needed in large quantities for production of steel are Iron ore, coal and sulphur Iron ore, coal and lime stone Iron ore, carbon and sulphur Iron ore, carbon and lime stone Iron ore, coal and sulphur Iron ore, coal and lime stone Iron ore, carbon and sulphur Iron ore, carbon and lime stone ANSWER DOWNLOAD EXAMIANS APP
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