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Question

Quality of ignition of petrol is measured by 

पेट्रोल के ज्वलन की गुणवत्ता किसके द्वारा मापी जाती है?

A.

Octane number

B.

Calorific value

C.

Specific fuel consumption

D.

Cetane number

Answer ( Option A)

Octane number

Solution

Ignition quality of petrol is expressed by octane number and that of diesel by cetane number.

Hence, the correct option is (A).

&Key Points:-

Gasoline has an octane number 93 - 97 .Cetane number denotes the ignition delay time (the start of the injection of diesel fuel to the onset of the auto-ignition). The cetane number ranks the fuels, the higher the cetane number the faster the auto-ignition.

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