Pick out the wrong statement?
AGraphite refractories are also called plumbago refractories
BCalcined magnesite is also called dead burnt magnesite
CInsulating refractories used in place of regular refractory bricks are usually called light weight refractories, and they have similar composition as heavy bricks
DSuperduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28
Correct answer
D. Superduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28
Explanation
The correct answer is Superduty fireclay bricks correspond to a pyrometric cone equivalent of 26-28.