Carbon refractories – McqOptions

MCQOPTIONS

1.	Carbon refractories
A.	do not burn/oxidise, when exposed to air on heating.
B.	are not attacked by slags, as they are not wetted by melts.
C.	do not resist temperature fluctuations.
D.	have extremely low thermal & electrical conductivities.
Answer» C. do not resist temperature fluctuations.

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