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Question

Among the following fuels, which has the least calorific value:

CNG, Petrol, Cow Dung Cake, Wood.


  1. Cow dung cake
  2. Wood
  3. Petrol
  4. CNG


Solution

The correct option is A Cow dung cake
Calorific value is the amount of heat liberated by combustion of one kilogram of a substance. 
FuelCalorific value (KJ/Kg)Cow dung cake7000Wood18000Petrol45000CNG50000
Among these, the fuel with the least calorific value is cow dung cake.

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