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The calorific value and ignition tempera...

The calorific value and ignition temperature of fuel A are 55 kJ/g and `20^(@)C` respectively. These values for another fuel B are 50 kJ/g and `80^(@)C` respectively. Which of the two will be more ideal fuel if, on burning, the fuel A produces `CO_(2),SO_(2)` and `SO_(3)` as by-products while the fuel B produces `CO_(2)` and `H_(2)O`? Give two reasons in support of your answer.

Text Solution

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Fuel B will be a more ideal fuel because of the following reasons : (i) Fuel B has a moderate ignition temperature of `80^(@)C` which is neither very high nor very low. On the other hand, the ignition temperature of fuel A is very low `(20^(@)C)` and hence it is unsafe to use.
(ii) Fuel B does not produce any harmful gases on burning. On the other hand, fuel A produces poisonous gases like `SO_(2)` and `SO_(3)` on burning.
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