Materials and Construction High speed steel tools retain their hardness upto a temperature of __________ °C. 1100 750 900 500 1100 750 900 500 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Refined acetic acid storage vessel are made of Aluminium High carbon steel Nickel Copper Aluminium High carbon steel Nickel Copper ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction __________ is a donor impurity for semi-conductors. Antimony Gallium None of these Boron Antimony Gallium None of these Boron ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Sulphuric acid pickling tanks are lined with Rubber Nickel Aluminium Glass Rubber Nickel Aluminium Glass ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Lead pipes are not safe for carraying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)₂. Lead pipes are readily corroded by Dilute HC₁ Acetic acid v None of these Dilute HC₁ Acetic acid v None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction H₂SO₄ (< 50% concentration) is corrosive to Glass, graphite, porcelain & stoneware Aluminium, mild steel, stainless steel, concrete & tin Rubber (butyl and hard), silicone rubber & teflon Copper, cast iron & high silicon iron (14% Si) Glass, graphite, porcelain & stoneware Aluminium, mild steel, stainless steel, concrete & tin Rubber (butyl and hard), silicone rubber & teflon Copper, cast iron & high silicon iron (14% Si) ANSWER DOWNLOAD EXAMIANS APP
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