Q.

Regarding batteries, some reactions are given below. The false combination is

see full answer

Want to Fund your own JEE / NEET / Foundation preparation ??

Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*

An Intiative by Sri Chaitanya

MnO2+NH4++e-→MnO(OH)+NH3 . . . Cathodic reaction in dry cell

Zn-Hg+2OH-→ZnO+H2O+Hg+2e- . . . Anodic reaction in mercury cell

Pb+SO4-2→PbSO4+2e- . . . Anodic reaction in lead storage battery during dischage

2H2O+2e-→H2+4OH- . . . Cathodic reaction in H2-O2 fuel cell

answer is D.

(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

In H2-O2 fuel cell At cathode : O2+2H2O+2e-→4OH-

Watch 3-min video & get full concept clarity

Connect with our

Expert Counsellors

access to India's best teachers with a record of producing top rankers year on year.

+91

We will send a verification code via OTP.