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Virendra Yadav
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Asked: 2023-04-27T09:48:00+00:00 In:

Which of the following coal has highest enthalpy of combustion? a) Peat coal b) Sami-bituminous coal c) Semi-anthracite coal d) Lignite coal

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Which of the following coal has highest enthalpy of combustion? a) Peat coal b) Sami-bituminous coal c) Semi-anthracite coal d) Lignite coal
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    11 Answers

    1. Answer: b
      Explanation: Peat and lignite coals have enthalpy of combustion about 3000 KJ/kg and 17600 KJ/kg. Semi-anthracite coals are harder than bituminous coals and have enthalpy of combustion up to 34750 KJ/kg while sami bituminous coals have that up to 35000 KJ/kg.

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    3. Answer: b
      Explanation: Peat and lignite coals have enthalpy of combustion about 3000 KJ/kg and 17600 KJ/kg. Semi-anthracite coals are harder than bituminous coals and have enthalpy of combustion up to 34750 KJ/kg while sami bituminous coals have that up to 35000 KJ/kg.

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    4. Answer: b

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    6. b) Sami-bituminous coal

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    7. Answer: b

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    9. Answer: b

      Explanation: Peat and lignite coals have enthalpy of combustion about 3000 KJ/kg and 17600 KJ/kg. Semi-anthracite coals are harder than bituminous coals and have enthalpy of combustion up to 34750 KJ/kg while sami bituminous coals have that up to 35000 KJ/kg.

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    10. b) Sami-bituminous coal

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    12. Answer: b
      Explanation: Peat and lignite coals have enthalpy of combustion about 3000 KJ/kg and 17600 KJ/kg. Semi-anthracite coals are harder than bituminous coals and have enthalpy of combustion up to 34750 KJ/kg while sami bituminous coals have that up to 35000 KJ/kg

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    13. Answer: b
      Explanation: Peat and lignite coals have enthalpy of combustion about 3000 KJ/kg and
      17600 KJ/kg. Semi-anthracite coals are harder than bituminous coals and have enthalpy
      of combustion up to 34750 KJ/kg while sami bituminous coals have that up to 35000
      KJ/kg.

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    15. Answer: b
      Explanation: Peat and lignite coals have enthalpy of combustion about 3000 KJ/kg and
      17600 KJ/kg. Semi-anthracite coals are harder than bituminous coals and have enthalpy
      of combustion up to 34750 KJ/kg while sami bituminous coals have that up to 35000
      KJ/kg.

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    16. Answer: b
      Explanation: Peat and lignite coals have enthalpy of combustion about 3000 KJ/kg and
      17600 KJ/kg. Semi-anthracite coals are harder than bituminous coals and have enthalpy
      of combustion up to 34750 KJ/kg while sami bituminous coals have that up to 35000
      KJ/kg.

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