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 Crucible process Cementation process Bessemer process Open hearth process Crucible process Cementation process Bessemer process ANSWER DOWNLOAD EXAMIANS APP
Building Materials The age of a tree can be known by examining Medullary rays Cambium layer Heart wood Annular rings Medullary rays Cambium layer Heart wood Annular rings ANSWER DOWNLOAD EXAMIANS APP
Building Materials Iron ore may contain All listed here Phosphorus and manganese Carbon Silicon All listed here Phosphorus and manganese Carbon Silicon ANSWER DOWNLOAD EXAMIANS APP
Building Materials For sanitary pipes and chemical stonewares, None of these Lead glazing is used Opaque glazing is used Salt glazing is used None of these Lead glazing is used Opaque glazing is used Salt glazing is used ANSWER DOWNLOAD EXAMIANS APP
Building Materials A first class brick when immersed in cold water for 24 hours should not absorb water more than 20 % 15 % 22 % 25 % 20 % 15 % 22 % 25 % ANSWER DOWNLOAD EXAMIANS APP
Building Materials The normal consistency of ordinary Portland cement is about 10 % 40 % 30 % 20 % 10 % 40 % 30 % 20 % ANSWER DOWNLOAD EXAMIANS APP
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