Q. Magnesite chrome refractories____________________?
a. Have better spalling resistance than chrome magnesite refractories
b. 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 cannot be used in metalcase form
No explanation is available for this question!
