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If in a petrol engine by mistake diesel fuel is supplied then the engine will be

1. Not run
2. Give dense smoke and will consume more fuel
3. Run for some time and then stop
4. Run smoothly

1 Answer

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Correct Answer - Option 1 : Not run


  • Petrol ignites by a spark from the spark plugs, diesel in a petrol engine clogs up the spark plugs and fuel system. That means the engine will not run.
  • When we put diesel in petrol engine the engine will not work because the flashpoint of diesel is very high ( 50°C ) as compared to that of petrol ( -43°C ) so vapour will not form of diesel fuel.
  • As petrol engine has carburetor which mixes fuel and air and supply to the engine but here there will be no combustion and vapour formed hence the engine will not run.

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