Refractory Technology
Magnesite chrome refractories

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

ANSWER DOWNLOAD EXAMIANS APP

Refractory Technology
Cermets are

Composite material containing both ceramic & metallic constituents
Having high strength & resistance to high temperature
Used in space vehicles, missiles & nuclear energy plants
All of these

ANSWER DOWNLOAD EXAMIANS APP