drying and crushing the coal to a fine powder

moulding the finely ground coal under pressure with or without a binding material

heating the wood with a limited supply of air to temperature not less than 280 Degree Centigrade

none of the above

greater than

less than

equal to

none of the above

Right

Wrong

Correct

Incorrect

constant volume process

adiabatic process

constant pressure process

isothermal process