Which are among the following defects in sand casting?
Which are among the following defects in sand casting?
(1) Open blows and blow holes
(2) Gases in metal, pin hole porosity
(3) Hot cracks
(4) Metal penetration
(5) Shrinkage defect
a. (1), (2) and (5)
b. (1), (2), (4) and (5)
c. (1), (2), (3) and (5)
d. all of the above
Correct Answer : d. all of the above
