Materials and Construction Lead pipes are not safe for carrying drinking water because water containing dissolved oxygen attacks lead thereby forming poisonous Pb (OH)2. Dilute HCI Concentrated H₂SO₄ None of these Acetic acid Dilute HCI Concentrated H₂SO₄ None of these Acetic acid ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The presence of impurities in iron Decreases its melting point Makes it malleable Does not affect its melting point Increases its melting point Decreases its melting point Makes it malleable Does not affect its melting point Increases its melting point ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The chlorinator used in the manufacture of DDT is made of Teflon Glass lined steel Glass Bakelite Teflon Glass lined steel Glass Bakelite ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Balls in a ball mill are usually made of Cast iron Steel Stainless steel Bronze Cast iron Steel Stainless steel Bronze ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which of the following metals in not used for coating of the base metal to guard it against corrosion? Magnesium Lead Aluminium Cadmium Magnesium Lead Aluminium Cadmium ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Which one contains the least percentage of carbon? Wrought iron Cast iron Pig iron High speed steel Wrought iron Cast iron Pig iron High speed steel ANSWER DOWNLOAD EXAMIANS APP
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