Chemistry Electrochemistry NUMS 2022
PMDC Verified Question 38 of 73
During electrolysis, reduction always occurs at:
A
Anode
B
SHE
C
Cathode
D
Salt bridge
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Cathode
Concept:

The definitions of the electrodes are tied strictly to the chemical processes that occur at their surfaces, regardless of whether the cell is galvanic or electrolytic.

Solution:

  • A universal mnemonic in electrochemistry is RED CAT (Reduction occurs at the Cathode) and AN OX (Oxidation occurs at the Anode).


  • In an electrolytic cell, the battery pumps electrons into the cathode. Positive ions (cations) migrate to the cathode to gain these electrons, completing the process of reduction.


Why other options are incorrect:

Oxidation occurs at the anode. A salt bridge is an internal pathway for ion exchange, not a site for redox reactions.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Electrochemistry MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App