Materials and Construction H₂SO₄ (< 50% concentration) is corrosive to 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) Glass, graphite, porcelain & stoneware ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction __________ is a donor impurity for semi-conductors. None of these Gallium Boron Antimony None of these Gallium Boron Antimony ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Soap kettle used in the production of laundry soap is made of Cast iron Steel with top section nickel clad or stainless steel Concrete Nickel Cast iron Steel with top section nickel clad or stainless steel Concrete Nickel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following is the hardest? Cementite Pearlite Ferrite Austenite Cementite Pearlite Ferrite Austenite ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Molybdenum steels containing 0.15 to 0.40% molybdenum Are used for automobile parts like gears, axle, shaft, bearings etc Do not contain nickel or chromium or both Are prone to temper brittleness Have very poor fatigue resistance Are used for automobile parts like gears, axle, shaft, bearings etc Do not contain nickel or chromium or both Are prone to temper brittleness Have very poor fatigue resistance ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Approximate value of the modulus of elasticity for steel is about __________ x l0⁶kg/cm². 40 0.5 75 2 40 0.5 75 2 ANSWER DOWNLOAD EXAMIANS APP
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