General Science - Physics (Basics)
Which of the following fuels has the highest calorific value per kilogram?
Which of the following fuels has the highest calorific value per kilogram?
medium Q5 of 15
Step-by-Step Solution
Step 1: Understand calorific value
Calorific value indicates energy released per unit mass on combustion.Step 2: Compare typical values
Petrol (~44 MJ/kg) has higher calorific value than coal (~24 MJ/kg), wood (~16 MJ/kg), and biogas (energy per volume).Final Answer:
Petrol → Option AQuick Check:
Highest energy per kg = Petrol ✅
Quick Trick: Petrol has highest energy density among common fuels.
Common Mistakes:
- Assuming solid fuels have higher energy than liquid fuels.
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