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Question

Ethyl fuel is used

इथाइल ईंधन का उपयोग किया जाता है

A.

To increase the octane rating of the fuel

B.

To increase the cetane rating of the fuel 

C.

As a defrosting agent 

D.

As a superior type of fluid compared to others

Answer ( Option A)

To increase the octane rating of the fuel

Solution

●Ethyl fuel is used to increase the octane rating of the fuel.

●Mixing 10 percent 113 octane ethanol with 85 octane gasoline, it increases the octane two points to the normal 87 octane most.

●Higher the ethanol content, the higher the octane. The octane rating for E15 (15% ethanol) is 88 octane and E85 (85% ethanol) is 108 octane. Thus ethyl is used to increase the octane rating of the fuel.

●Ethanol can be combined with petrol in any concentration upto pure ethanol to reduce the consumption of petroleum fuels as well as to reduce air pollution.

●It is also used to increase the octane rating of petrol and hence improve engine performance.

Hence, the correct option is (A).

&Key Points:-

Ethanol fuel is ethyl alcohol, the same type of alcohol found in alcoholic beverages, used as fuel. It is most often used as a motor fuel, mainly as a biofuel additive for gasoline. The first production car running entirely on ethanol was the Fiat 147, introduced in 1978 in Brazil by Fiat.

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