MCQ
In zone$-$refining method, the molten zone:
- AConsists of impurities only.
- ✓Contains more impurity than the original metal.
- CContains the purified metal only.
- DMoves to either side.
✓
Answer
Correct option: B.
Contains more impurity than the original metal.
Zone$-$refining process is a group of similar methods of purifying crystals, in which a narrow region of a crystal is melted, and this molten zone is moved along the crystal. The molten region melts impure solid at its forward edge and leaves a wake of purer material solidified behind it as it moves through the ingot. It typically contains more impurity than the original metal.
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