Q149
Magnesite chrome refractories
A.
Have better spalling resistance than chrome magnesite refractories
AnswerB.
Have very low thermal co-efficient of expansion
C.
Are not at all resistant to the corrosive action of iron oxide
D.
Have very low (50 kg/cm2) cold crushing strength (C.C.S.) and can not be used in metalcase form
Answer: Option A
Solution
Answer: Option A
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