Which is the stable form of silica between 1470°C and the melting point 1713°C ?

Related Mcqs:

Maximum shrinkage in volume occurring during burning/firing of dried refractories may be as high as ______________ percent?

A. 10 B. 15 C. 20 D. 30...

Silica bricks are attacked by basic slags at high temperature. Which of the following is not used solely as a binding material ?

A. Aluminium phosphate B. Water C. Lime D. Plaster of Paris...

Except _____________, all other refractories are bad conductors of electricity (i.e, have low electrical conductivity)?

A. Fireclay B. Carborundum C. Graphite D. Chromite...

Thermal diffusivity of a refractory brick is high, when its ____________ is high?

A. Density B. Specific heat C. Thermal conductivity D. None of these...

Cold crushing strength of fireclay bricks is about ______________ kgf/cm2?

A. 50-100 B. 100-150 C. 200-400 D. 500-1000...