Materials and Construction Copper is dissolved from its ore by H₂SO₄ in a percolation tank made of Reinforced concrete lined with lead Stainless steel Wood High silicon iron (14% Si) Reinforced concrete lined with lead Stainless steel Wood High silicon iron (14% Si) ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V. Having poor fatigue resistance Having poor toughness Used for making axle & shafts of aeroplanes, automobiles and locomotives Not helpful in producing cleaner steel due to oxidising action of vanadium Having poor fatigue resistance Having poor toughness Used for making axle & shafts of aeroplanes, automobiles and locomotives Not helpful in producing cleaner steel due to oxidising action of vanadium ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction How many molecules per unit cell are there in a face centred cubic lettice? 2 6 4 8 2 6 4 8 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Ceramic materials fabrication can not be done by Extrusion Slip casting Plastic pressing Welding Extrusion Slip casting Plastic pressing Welding ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Iron rust is Ferrous oxide Hydrated ferric oxide Powdered iron Ferric sulphide Ferrous oxide Hydrated ferric oxide Powdered iron Ferric sulphide ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Carbon is present in steel wholly in the Free state as graphite Combined form Both A & B Neither A nor B Free state as graphite Combined form Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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