Materials and Construction Presence of high amount of silicon in cast iron Increases the formation of graphite Increases the contraction of the metal Suppresses the decomposition of Fe₃ C Reduces its fluidity Increases the formation of graphite Increases the contraction of the metal Suppresses the decomposition of Fe₃ C Reduces its fluidity ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction In order to be called steel, an alloy should have iron percentage greater than 50 90 80 70 50 90 80 70 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Coke oven walls are lined with __________ bricks. Silica Low thermal conductivity Fire clay Tar-dolomite Silica Low thermal conductivity Fire clay Tar-dolomite ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Lead pipes are not safe for carraying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)₂. Lead pipes are readily corroded by v None of these Acetic acid Dilute HC₁ v None of these Acetic acid Dilute HC₁ ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The specific gravity of coal depends mainly on its __________ content. Carbon Ash Volatile matter Moisture Carbon Ash Volatile matter Moisture ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Ability of a material to absorb energy in deformation in the plastic range is characterised as its Toughness Ductility Creep Resilience Toughness Ductility Creep Resilience ANSWER DOWNLOAD EXAMIANS APP
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