is the weight of residue obtained after burning a weighed amount of dry coal.

Related MCQs

• On which property of coal does the design of bunkers for the storage of coal depends?
• Which type of coal give more amount of heat after combustion?
• The lowest temperature to which the fuel must be preheated so that it starts burning smoothly is called              temperature.
• 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?