Thermal spalling mainly occurs during __________ of furnaces. Options: A . &nbspcooling down B . &nbspwarming up C . &nbspboth (a) & (b) D . &nbspneither (a) nor (b)

Question

Thermal spalling mainly occurs during __________ of furnaces.

Options:

A . cooling down

B . warming up

C . both (a) & (b)

D . neither (a) nor (b)

Answer: Option C

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