(i) A : Bauxite and C : Cryolite are ores of aluminium. E : Sodium hydroxide solution is used...

(i) Iron and Chromium are used to make stainless steel (ii) Copper and Zinc are used to make brass.

(i) Mercury is liquid at room temperature. (ii) Cryolite [Na3AlF6] is added to lower the fusion temp, of the...

Silver Nitrate (AgNO3) Reason — Copper displaces silver from AgNO3 soln. forming the blue copper [II] nitrate...

it loses electrons and is oxidized Reason — metals readily give the valence electron during reactions...

(i) Sodium hydroxide is used to react with bauxite as a first step in obtaining pure aluminium...

Copper and zinc

(i) Electrodes A and B are made of graphite (carbon). (ii) Aluminium is formed at cathode...

Haematite is the chief ore of iron. Or Bauxite is the chief ore of aluminium.

(i) A is cathode and B is anode. (ii) Mixture of cryolite, BaF2, AlF, CaF2...