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A. 15%

B. 20%

C. 30%

D. 45%

A. High calorific value

B. Produce minimum smoke and gases

C. Ease in storing

D. High ignition point

A. High burning rate is possible

B. Heat release can be easily controlled

C. Fuel burns economically

D. It is the best technique for burning high ash content fuel having low fusion ash

A. To provide proper conditions for continuous complete combustion

B. Mix fuel with air and ignite

C. Separate ash from coal

D. Maintain heat supply to prepare and ignite the incoming fuel

A. It has heating value

B. It helps in electrostatic precipitation of ash in flue-gases

C. It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low

D. It erodes furnace walls