Materials and Construction H₂SO₄ (< 50% concentration) is corrosive to 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 Rubber (butyl and hard), silicone rubber & teflon Glass, graphite, porcelain & stoneware ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following pairs of elements may form an alloy? Iron & mercury Platinum & mercury Iron & carbon None of these Iron & mercury Platinum & mercury Iron & carbon None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction How many molecules per unit cell are there in a face centred cubic lettice? 2 4 8 6 2 4 8 6 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction When iron is rusted, it is Oxidised Reduced None of these Converted to a fine powder Oxidised Reduced None of these Converted to a fine powder ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Spray dryer for evaporating milk to produce milk powder is made of Cast iron Lead lined steel Aluminium Stainless steel Cast iron Lead lined steel Aluminium Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Clock pendulums are usually made of __________ steel. None of these Stainless High speed Heat resisting None of these Stainless High speed Heat resisting ANSWER DOWNLOAD EXAMIANS APP
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