Refining of metals is done by:

Heating in presence of air

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Electrolysis

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Heating in absence of air

No worries! We‘ve got your back. Try BYJU‘S free classes today!

None of the given options are correct

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
Electrolysis

Refining of metals is done by electrolysis. Metals like copper, silver, zinc and gold can be obtained by refining in the electrolysis process.
In an electrolytic cell, the impure metal is made anode and a thin strip of pure metal is made cathode. A solution of a suitable salt of the concerned metal is used as the electrolyte. On passing electricity, the anode undergoes dissolution while the pure metal gets deposited at the cathode. Insoluble impurities deposit below the anode in the form of anode mud.

Suggest Corrections

Similar questions

Q. What are the products obtained by heating ethane in:
(a) excess of air
(b) absence of air
(c) air in presence of copper and 120 atm pressure.
(d) air with molybdenum oxide at 100 atm pressure.

Why aren't the four products obtained when we heat coal in the presence of air? Why are they obtained only when we heat it in absence of air (distructive distillation)?

Q. Coal tar is obtained by heating coal in the absence of air.

Q. The process in which carbonate ores are changed into oxides by heating strongly in absence of air, is:

Q. Heating the metallic ore in the presence of excess air is known as __________.

Join BYJU'S Learning Program