Which of the following metals are magnetic in nature?
Aluminium, copper
Cobalt, nickel, iron, steel
Copper, lead, brass, zinc
Iron, aluminium, zinc, lead
Cobalt, nickel, iron, steel are magnetic materials.
Brass is an alloy of :
(a) Copper and tin, (b) Copper and zinc,
(c) Zinc and lead, (d) Lead and tin.
Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin and Copper etc. are reduced by using