Safe condition for storage of high V.M. bituminous coal is that ________?

For a particle settling in water at its terminal settling velocity, which of the following is true?

As complete saturation of an adsorbent is approached, the differential heat of adsrop-tion approaches ________?

Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but________?

Coagulant is used ________ filtration?

________ of carbon blocks in the hearth of blast furnace helps in avoiding skull formation, when it becomes cold?