Correct Answer: On passing current, pure metal is deposited on the anode.
Subject: 2025
Explanation: <b>Key Fact</b><br>In electrolytic refining, impure metal is made the anode and pure metal is deposited at the cathode; the marked incorrect statement reverses this.<br><br><b>Additional Info</b><br>Topic: Metallurgy. The correct option is <b>C</b> — On passing current, pure metal is deposited on the anode..<br><br><b>Why the other options are wrong</b><br><b>Option A</b>: The thin sheet of pure metal is made the cathode. — not the option marked correct for this question.<br><b>Option B</b>: A solution of the metal salt is used as the electrolyte. — not the option marked correct for this question.<br><b>Option D</b>: The impure metal is made the anode. — not the option marked correct for this question.<br><br><b>Exam Trick</b><br>Identify the exact concept tested, then eliminate options that contradict the definition, formula, chronology or fact in the question.<br><br><b>Final Answer</b><br>Option C — On passing current, pure metal is deposited on the anode..