Which is the most stable crystalline form of silica at room temperature ?

Related Mcqs:

Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about ______________ percent?

A. 5 B. 20 C. 35 D. 55...

RUL of refractories depends on the _____________________?

A. Chemical composition B. Physical structure C. Presence of impurities like iron & alkali D. All A., B. and C....

Which is the stable form of silica below 870°C ?

A. Tridymite B. Cristobalite C. Quartz D. None of these...

Silica refractories are not used in _________________?

A. Coke oven walls B. Beehive coke ovens C. Dome and upper portion of B.F. stoves D. Open hearth furnace roof...

Sillimanite is a _____________ refractory?

A. Basic B. Neutral C. High alumina D. Insulating...