Materials and Construction Duriron is Prone to breakage due to thermal expansion because of its very high co-efficient of thermal expansion Acid resistant, brittle and very hard All of these High silicon iron Prone to breakage due to thermal expansion because of its very high co-efficient of thermal expansion Acid resistant, brittle and very hard All of these High silicon iron ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The presence of impurities in iron 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 Decreases its melting point ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Metalloid is An alloy An element which exhibits the properties of both metal & non-metal Highly electronegative in nature All of these An alloy An element which exhibits the properties of both metal & non-metal Highly electronegative in nature All of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Perspex is nothing but Aluminium foil clad with bakelite An elastomer Acrylic sheet An alloy of lead and tin Aluminium foil clad with bakelite An elastomer Acrylic sheet An alloy of lead and tin ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction White cast iron as compared to grey cast iron is Very hard More durable Very brittle All of these Very hard More durable Very brittle All of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction A chemical change takes place when iron None of these Melts Rusts Is heated None of these Melts Rusts Is heated ANSWER DOWNLOAD EXAMIANS APP
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