. Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm2) is ______________ °C?

Related Mcqs:

Zirconia refractory_________________?

A. Does not react with basic slags B. Is produced from baddeleyite C. Cannot be used as an insulator D. Has poor electrical conductivity at high temperature...

Firing of refractory brick is done to __________________?

A. Dehydrate the dried refractory B. Develop stable mineral forms in them C. Form ceramic bonds necessary for development of high crushing strength in the finished product D. All A., B. and C....

Insulating refractories should have_______________?

A. High porosity B. Low thermal conductivity C. Both A. and B. D. Neither A. not B....

Silica bricks have low spalling resistance below 600°C, due to its________________?

A. Very high thermal conductivity B. High co-efficient of expansion upto this temperature C. High thermal diffusivity D. Low refractoriness...

Highest melting (m.p = 3070°C) oxide refractory is__________________?

A. Alumina B. Thoria C. Zirconia D. Magnesia...