Thermal conductivity of refractory bricks_________________?

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...

Which is not a basic refractory ?

A. Chrome magnesite B. Magnesite C. Dolomite D. Silicon carbide...

Magnesite bricks are used in those parts of furnaces, which are __________________?

A. Subjected to temperature fluctuation B. Required to resist corrosive basic slag C. Subjected to high load D. None of these...

Pick out the wrong statement?

A. Sand & coke is the main raw material for the manufacture of silicon carbide B. Carbon refractories cannot be used in the furnaces operating under reducing conditions C. Mullite can be obtained by the heating of alusite, kyanite or sillimanite D. Silica occurs in nature in all cellular, amorphous or crystalline form...

Porosity of fireclay refractories is _______________ percent?

A. 5-10 B. 10-25 C. 25-35 D. 35-50...