225.65 kgf/cm2

273 kgf/cm2

100 kgf/cm2

1 kgf/cm2

less

more

equal

may be less or more depending on temperature

linearly

rapidly first and then slowly

slowly first and then rapidly

inversely

pulverising coal in inert atmosphere

heating wood in a limited supply of air at temperatures below 300°C

strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel

binding the pulverised coal into brickettes

pulverising coal in inert atmosphere

heating wood in a limited supply of air at temperatures below 300GC

strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel

binding the pulverised coal into bricketts