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 CO while fuel X produces CO and CO. Which of the two is a better fuel ? Give two reasons to support your answer.

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1 Answers

Fuel Y is a better fuel because 

(i) it has a moderate ignition temperature of 75°C. 

(ii) it produces no harmful gases like CO on burning.

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