What is the phenomenon of the formation of coal called?

Related MCQs

• On which property of coal does the design of bunkers for the storage of coal depends?
• When the coal is completely burnt in air, then the maximum temperature reached is called                    
• Which type of coal give more amount of heat after combustion?
• How does the texture of coal changes with its maturity?
• On what factors does the specific gravity of coal depends?
• Which of the coal have the best heating values in terms of volatile matter?
• How does the friability of the coal is tested?
• Which property of coal is tested in Audibert Arnu test?
• Phosphorous and sulphur content in the coal tend to make a metal brittle.
• Which of the following is not a characteristic of coal?