Materials and Construction The presence of impurities in iron Does not affect its melting point Increases its melting point Makes it malleable Decreases its melting point Does not affect its melting point Increases its melting point Makes it malleable Decreases its melting point 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 None of these Dilute HC₁ Acetic acid v None of these Dilute HC₁ Acetic acid v ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Tin coating on metals is not done by Powder metallurgy Electro-deposition Hot dipping Spraying Powder metallurgy Electro-deposition Hot dipping Spraying ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon. 0.2 2 8 4 0.2 2 8 4 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ? Graphite Stainless steel Kel-F and teflon Monel Graphite Stainless steel Kel-F and teflon Monel ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Reduction in the grain size reduces the __________ of the material. Fatigue resistance Creep resistance Tensile strength All of these Fatigue resistance Creep resistance Tensile strength All of these ANSWER DOWNLOAD EXAMIANS APP
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