A. Gold is denser B. Iron rusts C. Gold has higher electrode potential than iron D. Gold has lower electrode potential than iron

A. Square planar B. Trigoanal bipyramid C. Triangular D. None of these

A. Iron carbide B. Silicon carbide C. Silicon dioxide D. Graphite

A. An electric furnace B. A blast furnace C. An open hearth furnace D. None of these

A. Cast iron B. Wrought iron C. Pig iron D. Steel

A. Oxygen B. Water C. Moisture D. All of these

A. Oxide B. Carbonate C. Nitride D. Hydroxide

A. Hard steel B. Cast iron C. Mild steel D. Wrought iron

A. Cu plating B. Zn plating C. Ag plating D. Tin plating

A. Carbon B. Limestone C. CO D. CO2