Materials and Construction The process of coating steel sheets by zinc to improve its corrosion resistance is called Calorising Zincification Galvanising Tempering Calorising Zincification Galvanising Tempering ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Hardening of steel is not possible unless it is heated __________ critical point. Above the lowest Above the highest Between the second & third Between the first & second Above the lowest Above the highest Between the second & third Between the first & second ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following finds the least commercial use? Pure iron Low carbon steel High carbon steel High silicon iron Pure iron Low carbon steel High carbon steel High silicon iron ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The electrical conductivity of a __________ decreases with rise in temperature. Metal/alloy Semi-conductor None of these Dielectric Metal/alloy Semi-conductor None of these Dielectric ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The presence of impurities in iron Decreases its melting point Increases its melting point Makes it malleable Does not affect its melting point Decreases its melting point Increases its melting point Makes it malleable Does not affect its melting point 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
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