Cold crushing strength of ordinary fireclay brick is about 950 kg/cm2. On exposure to a temperature of about 1500°C, its crushing strength may come down to as low as ________ kg/cm2?

How many atoms are present in one gm-atom of an element?

A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides ________?

Feed for reforming is generally________?

One ton of refrigeration is not equivalent to the heat removal rate of ________?

Phosphate rock is a raw material for the manufacture of________?