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Calorific value and ignition temperature of fuel X are 75 kj/g and 20°C respectively. These values for fuel Y are 50 kj/g and 75°C respectively. On burning, the fuel Y produces only C02 while fuel X produces C02 and CO. Which of the two is a better fuel ? Give two reasons to support your answer.

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Out of fuel X and  Y, Y will be considered as a better fuel. 

The reasons supporting fuel Y are: 

  1. It does not produce harmful gas like CO.
  2. It has a moderate ignition temperature. 
Posted by

Deependra Verma

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