Materials and Construction Which metal is protected by the layer of its own oxide? Calcium Silver Aluminium Iron Calcium Silver Aluminium Iron ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Steel tower used for the storage of oleum Is lined with rubber Is lined with acid-proof bricks Is lined with lead Need not be lined Is lined with rubber Is lined with acid-proof bricks Is lined with lead Need not be lined ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Cermets are used for making Both A & B Abrasives Neither A nor B Cutting tools Both A & B Abrasives Neither A nor B Cutting tools ANSWER DOWNLOAD EXAMIANS APP
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. Acetic acid Concentrated H₂SO₄ Dilute HCI None of these Acetic acid Concentrated H₂SO₄ Dilute HCI None of these ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction The impure iron (pig iron) that is tapped out from blast furnace contains about __________ percent carbon. 8 0.2 4 2 8 0.2 4 2 ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction German silver used for decorative purposes contains maximum percentage of Nickel Copper Zinc Silver Nickel Copper Zinc Silver ANSWER DOWNLOAD EXAMIANS APP
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