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Choose the INCORRECT statement with respect to solid fuels and liquid fuels used in power generation.
1. Solid fuels have higher percentage of moisture, and consequently, they burn with great difficulty.
2. Liquid flues require special types of burners for burning.
3. Handling of solid fuels is easier, and they require less storage space.
4. The waste product of solid fuels is a large quantity of ash.

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Correct Answer - Option 3 : Handling of solid fuels is easier, and they require less storage space.
Advantage of liquid fuel over solid fuel:
  • Handling of liquid fuel is easy and they require less storage space
  • Liquid fuels can be fired easily and maximum temperature is attained in time as compared to solid fuels.
  • The solid fuels containing higher moisture and burn with great difficulty.
  • The solid fuels leave a large quantity of ash after burning and then disposal of ash becomes a problem. Whereas the liquid fuels as very little ash after burning. 
  • The combustion of liquid fuel is uniform therefore the change in load can be easily met by controlling the flow of fluid.
     

Disadvantage of liquid fuel over solid fuel:

  • They are costly as compared to solid fuels
  • They require a special type of burners
  • In a cold climate, the oil stored in tanks is to be heated in order to avoid the stoppage of flow.

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