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Combustion and Flame — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceCombustion and Flame1 Mark
MCQ
Which of the following fuels is the most efficient?
  • A
    Coal
  • B
    Wood
  • ✓
    Biogas
  • D
    Charcoal
✓

Answer

Correct option: C.
Biogas

Fuel efficiency is measured in terms of its calorific value. Calorific value is defined as the amount of heat energy produced on complete combustion of 1kg of fuel. Amongst the above mentioned fuels, biogas has a maximum calorific value of $35000$? $40000kJ/ kg$. Hence, it is the most efficient among the given fuels.

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