Question

what are secondary fuel?​

Answer 1

Secondary fuels are fuels that are derived from some primary fuel or fuels through chemical or physical processes. These are fuels that are not found as a natural resource. ... This means that secondary fuels are often an intermediate form of energy between the primary energy and the energy services

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Answer 2

Answer:

Secondary fuels are fuels that are derived from some primary fuel or fuels through chemical or physical processes. These are fuels that are not found as a natural resource. This means that secondary fuels are often an intermediate form of energy between the primary energy and the energy services.

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