Banner 0
Banner 1
Banner 2
Banner 3
Banner 4
Banner 5

Q.

During the electrolytic reduction of alumina, the reaction at cathode is

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away
An Intiative by Sri Chaitanya

a

3F-→3F+3e

b

Al3++3e→Al

c

2H2O→O2+4H++4e

d

2H++2e→H2

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

  • The melting point of alumina is quite high. 
  • Cryolite is introduced during alumina electrolysis to lower the melting point of alumina. 
  • Cryolite also improves alumina conductivity.
  • Ionic compound aluminium oxide (Al2O3) When it is melted, it produces Al3+ and O2− ions, which are free to travel and conduct electricity. Ions are not free in the solid state and cannot carry electricity.
     
  • Alumina is reduced electrolytically.
  • Al+3+3e-−→Al.

Best Courses for You

JEE

JEE

NEET

NEET

Foundation JEE

Foundation JEE

Foundation NEET

Foundation NEET

CBSE

CBSE

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon