Which of the following materials is/are used as backfill around the a – McqOptions

MCQOPTIONS

1.	Which of the following materials is/are used as backfill around the anode in impressed currents?
A.	Coke breeze
B.	Gypsum
C.	Bentonite
D.	Coke breeze, gypsum, and bentonite
Answer» E.

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