Materials and Construction The electrical conductivity of a __________ decreases with rise in temperature. None of these Semi-conductor Metal/alloy Dielectric None of these Semi-conductor Metal/alloy Dielectric ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Wrought iron is having very high Strength Hardness Corrosion resistance Susceptibility to changes in its properties by heat treatment Strength Hardness Corrosion resistance Susceptibility to changes in its properties by heat treatment ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Beehive coke ovens are made of __________ bricks. Silica Silicon carbide Corundum Fireclay Silica Silicon carbide Corundum Fireclay ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Hydrochloric acid absorber in made of Cast iron Karbate Stainless steel Mild steel Cast iron Karbate Stainless steel Mild steel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Pure nickel is Not resistant to oxidation at high temperature Ferromagnetic at room temperature Having h.c.p. crystal lattice Ferromagnetic above its curie point (i.e., 415°C) Not resistant to oxidation at high temperature Ferromagnetic at room temperature Having h.c.p. crystal lattice Ferromagnetic above its curie point (i.e., 415°C) ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Presence of high amount of silicon in cast iron Increases the contraction of the metal Reduces its fluidity Suppresses the decomposition of Fe₃ C Increases the formation of graphite Increases the contraction of the metal Reduces its fluidity Suppresses the decomposition of Fe₃ C Increases the formation of graphite ANSWER DOWNLOAD EXAMIANS APP
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