With increase in the alumina content, the refractoriness of high alumina refractories_______________?

Related Mcqs:

Machine moulding of dry mixture of refractories requires a pressure of the order of _____________ kg/cm2?

A. 10 B. 100 C. 500 D. 1000...

_____________ nozzles are used in continuous casting of steel?

A. Zircon B. Thoria C. Carborundum D. Beryllia...

Firing temperature is minimum (1250-1400 °C) for _______________ bricks?

A. Fireclay B. Direct bonded basic C. Silica D. Magnesite...

Dry mix hydraulic compositions of refractory aggregates with suitable bonding materials are called refractory_________________?

A. Mortars B. Cements C. Castables D. None of these...

The highest melting pure oxide (m.p. > 3000°C)is___________________?

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