Which fraction in the list is typically used as petrol (gasoline) for cars?

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Multiple Choice

Which fraction in the list is typically used as petrol (gasoline) for cars?

Explanation:
Petrol is the light, volatile fraction obtained from crude oil that is suitable for burning in spark-ignition engines. It vaporizes easily, mixes well with air, and has a suitable octane rating to prevent knocking, which is why it’s used as fuel for cars. The other options are heavier or non-fuel fractions: diesel is a heavier fraction used in diesel engines, lubricating oil is too viscous and used for lubrication, and refinery gases are gases at room temperature and typically used as LPG or feedstock rather than as petrol.

Petrol is the light, volatile fraction obtained from crude oil that is suitable for burning in spark-ignition engines. It vaporizes easily, mixes well with air, and has a suitable octane rating to prevent knocking, which is why it’s used as fuel for cars. The other options are heavier or non-fuel fractions: diesel is a heavier fraction used in diesel engines, lubricating oil is too viscous and used for lubrication, and refinery gases are gases at room temperature and typically used as LPG or feedstock rather than as petrol.

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