MCQ
In $Cu - Zn$ cell
- ✓Reduction occurs at the copper cathode
- BOxidation occurs at the copper cathode
- CReduction occurs at the anode
- DChemical energy is converted to light energy
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Assertion $A$: $\mathrm{pK}_{\mathrm{a}}$ value of phenol is $10.0$ while that of ethanol is $15.9$.
Reason $R$: Ethanol is stronger acid than phenol.In the light of the above statements, choose the correct answer from the options given below: