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Question

How self-ignition temperature of petrol be compared to that of diesel?

पेट्रोल का स्व-प्रज्वलन तापमान डीजल की तुलना में कितना है?

A.

Higher

B.

Lower

C.

Same

D.

Insufficient data

Answer ( Option A)

Higher

Solution

The self-ignition temperature of petrol is higher than that of diesel. Petrol has an auto-ignition temperature about 500 C  higher than diesel. In typical diesel compound there are simply more opportunities for oxygen to attack the molecule and kick off a reaction because the amount of the molecule exposed to the outside is higher.

Hence, the correct option is (A)

.&Key Points:-

Self-ignition auto ignition temperature is lowest temperature at which a fuel like petrol or diesel spontaneously ignites in normal atmosphere without an external source of ignition.

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