Multiple choice

The fuel having the lowest calorific value is:

  1. coal

  2. wood

  3. charcoal

  4. kerosene
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Wood has the lowest calorific value among these fuels due to high moisture content and lower carbon density compared to coal, charcoal, and processed fuels like kerosene. The calorific values rank approximately: kerosene > charcoal > coal > wood.

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