Materials and Construction The main purpose of galvanising iron sheets is to Harden the surface Increase its glossiness and lustre Prevent the action of water Prevent the action of oxygen Harden the surface Increase its glossiness and lustre Prevent the action of water Prevent the action of oxygen ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Stainless steel is not corroded by Hydrochloric acid (10%) Saturated brine Nitric acid (10%) Sulphuric acid (10%) Hydrochloric acid (10%) Saturated brine Nitric acid (10%) Sulphuric acid (10%) ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Light weight metallic alloy used in aircraft industry is Aluminium High silicon (14%) iron Phosphor bronze Duralumin Aluminium High silicon (14%) iron Phosphor bronze Duralumin ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction H₂SO₄ (< 50% concentration) is corrosive to Glass, graphite, porcelain & stoneware Aluminium, mild steel, stainless steel, concrete & tin Copper, cast iron & high silicon iron (14% Si) Rubber (butyl and hard), silicone rubber & teflon Glass, graphite, porcelain & stoneware Aluminium, mild steel, stainless steel, concrete & tin Copper, cast iron & high silicon iron (14% Si) Rubber (butyl and hard), silicone rubber & teflon ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The high expansion metal normally used in the bimetallic thermometer is __________ temperature measurement. Aluminium for all Both A & B Nickel alloys for high Brass for low Aluminium for all Both A & B Nickel alloys for high Brass for low ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets. Tungsten Nickel Chromium Cobalt Tungsten Nickel Chromium Cobalt ANSWER DOWNLOAD EXAMIANS APP
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