A. Gold B. Silver C. Copper D. Sodium

A. Hoop’s process B. Bayer’s process C. Serpeak’s process D. Hall’s process

A. Its high density B. Its high polishing C. Its chemical inertness D. Presence of free electrons

A. Silver B. Copper C. Iron D. Sodium

A. Cannot be produced from it B. Can be produced from it C. Can be extracted from it profitable D. Is very costly

A. Iron B. Aluminium C.calcium D. Sodium

A. Cathode B. Anode C. Both D. None

A. Cu B. Ag C. Fe D. Hg

A. C B. Al C. H D. Electric current