Materials and Construction Galvanising (i.e., zinc coating) of steel sheets is done to Prevent its rusting by contact with corrosive atmosphere Protect the base metal by cathodic protection Neither A nor B Both A & B Prevent its rusting by contact with corrosive atmosphere Protect the base metal by cathodic protection Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Ceramic materials Are exemplified by clay and mica Are poor electrical conductors due to lack of free electrons All of these Never exhibit polymorphism Are exemplified by clay and mica Are poor electrical conductors due to lack of free electrons All of these Never exhibit polymorphism ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction H₂SO₄ (< 50% concentration) is corrosive to Rubber (butyl and hard), silicone rubber & teflon Glass, graphite, porcelain & stoneware Copper, cast iron & high silicon iron (14% Si) Aluminium, mild steel, stainless steel, concrete & tin Rubber (butyl and hard), silicone rubber & teflon Glass, graphite, porcelain & stoneware Copper, cast iron & high silicon iron (14% Si) Aluminium, mild steel, stainless steel, concrete & tin ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Spark plugs are made of Metallic carbides Carborundum High alumina ceramic Corundum Metallic carbides Carborundum High alumina ceramic Corundum ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Rubber lined pumps can be used to pump Caustic soda Chlorinated brine Hypochlorous acid All of these Caustic soda Chlorinated brine Hypochlorous acid All of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Silicon percentage in iron castings to have maximum hardness should be about 2.5 0.3 0.5 0.8 2.5 0.3 0.5 0.8 ANSWER DOWNLOAD EXAMIANS APP
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