Q. Riser is a reservoir of molten metal provided in the casting so that hot metal can flow back into the mould cavity when there is a reduction in the volume of metal due to

A
Compression
B
Solidification
C
Expansion
D
None of the Mentioned
Solution:

Riser is a reservoir of molten metal provided in the casting so that hot metal can flow back into the mould cavity when there is a reduction in the volume of metal due to solidification.

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