1. The molten metal should enter the mould cavity with as high a velocity as possible. |
2. It should facilitate, complete fillings of the mould cavity. |
3. It should be able to prevent the absorption of air or gases from the surroundings on the molten metal while flowing through it. |
A) 1, 2 and 3
B) 1 and 2
C) 2 and 3
D) 1 and 3
Correct Answer: C
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