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Combustion and Flame — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceCombustion and Flame1 Mark
MCQ
Which one of the following has the highest calorific value?
  • A
    Kerosene.
  • B
    Biogas.
  • ✓
    $LPG.$
  • D
    Petrol.
✓

Answer

Correct option: C.
$LPG.$
$LPG$ has the highest calorific value, i.e. $55000 kJ/kg.$
It means that if $1kg$ of $LPG$ is burnt completely, then it will produce $55000$ kilojoules of heat energy.
Note:
Calorific value
$45000 kJ/kg$ $35000$ to $40000 kJ/kg$ $45000 kJ/kg$

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