List-I (Casting defects) | List-II (Explanation) | ||
A. | Metallic projections | 1. | Consist of rounded or rough projections internal or exposed cavities including blow holes and pin holes |
B. | Cavities | 2. | Formed during melting, solidification and moulding |
C. | Inclusions | 3. | Includes single folds, laps, scars adhering sand layers and oxide scale |
D. | Discontinuities | 4. | Include cracks, cold or hot tearing and cold shuts |
5. | Consist of fins, flash or massive projections ions and rough surface |
A) A\[\to \]1, B\[\to \]5, C\[\to \]3, D\[\to \]2
B) A\[\to \]1, B\[\to \]5, C\[\to \]2, D\[\to \]4
C) A\[\to \]5, B\[\to \]1, C\[\to \]2, D\[\to \]4
D) A\[\to \]5, B\[\to \]1, C\[\to \]3, D\[\to \]2
Correct Answer: C
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