Match the casting defects (Group A) with the probable causes (Group B): Group-A P. Hot tears Q. Shrinkage R. Blow holes S. Cold shunt Group-B 1. Improper fusion of two streams of liquid metal 2. Low permeability of the sand mould 3. Volumetric contraction both in liquid and solid stage 4. Differential cooling rate

Match the casting defects (Group A) with the probable causes (Group B)

1.	Match the casting defects (Group A) with the probable causes (Group B): Group-A P. Hot tears Q. Shrinkage R. Blow holes S. Cold shunt Group-B 1. Improper fusion of two streams of liquid metal 2. Low permeability of the sand mould 3. Volumetric contraction both in liquid and solid stage 4. Differential cooling rate
A.	P-1, Q-3, R-2, S-4
B.	P-4, Q-3, R-2, S-1
C.	P-3, Q-4, R-2, S-1
D.	P-1, Q-4, R-4, S-3
Answer» C. P-3, Q-4, R-2, S-1

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