Q. 1. a) What are fuels? Name any two common fuel. (b) State any four characteristics of an ideal fuel (or good fuel).

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  • Any substance which upon combustion produces a usable amount of energy is known as For example, fossil fuels, biogas, nuclear energy etc.
  • Characteristics of an ideal fuel (or good fuel) are:
    • Fuel is easily available and cheaper
    • Burns easily in the air at a moderate rate
    • Releases a large amount of energy
    • No harmful substances must be emitted from fuel
    • Eco friendly

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