1.

Match the following sand mold casting defects with their respective causes.DefectCauseP. Blow hole1. Poor collapsibilityQ. Misrun2. Mold erosionR. Hot tearing3. Poor permeabilityS. Wash4. Insufficient fluidity

A. P-4, Q-3, R-1, S-2
B. P-3, Q-4, R-2, S-1
C. P-2, Q-4, R-1, S-3
D. P-3, Q-4, R-1, S-2
Answer» E.


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