Zirconia refractories are not used in – McqOptions

MCQOPTIONS

1.	Zirconia refractories are not used in
A.	making sheaths for thermocouple.
B.	lining high temperature ceramic kilns.
C.	furnaces subjected to fluctuating temperature.
D.	high frequency induction furnaces in the form of inductors.
Answer» D. high frequency induction furnaces in the form of inductors.

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