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In electrolytic refining, the impure metal is used as the:

AAnode
BCathode
CCasing
DCradle
Answer & Solution
Correct answer: A. Anode
1. Metal dissolves from one electrode and deposits on the other. 2. The impure block must be the one that dissolves. 3. So it is the anode. _Source: syllabus Chemistry Part I, Class XII, General Principles and Processes of Isolation of Elements._
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