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NTA Abhyas NEET2020ChemistryElectrochemistryPractice

A knocking sound is produced in the engine when the fuel

Options

  1. Aburns fast
  2. Bburns slowly
  3. Cis contaminated with lubricating oil
  4. Dcontains some water

Correct answer

A. burns fast

Step-by-step solution

In fast burning total fuel is not burnt and unburnt fuel produces knocking.

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