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What is a fuel?

  1. It is readily available
  2. It is cheap and burnt easily
  3. Example wood, petrol and kerosene
  4. All of the above

Answer: All of the above

Long Answer:

A fuel has the following characteristics:

  1. A good fuel is readily available.
  2. It should be cheap and must burnt easily in air
  3. It produces a large amount of heat.
  4. Example: wood, petrol and kerosene

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