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An apparatus used for charging air with petrol vapours in an internal combustion engine is called?

  • A.Carburettor
  • B.Callipers
  • C.Chronometer
  • D.Electrometer

Answer: A

The apparatus is the carburettor.

In a petrol (spark-ignition) engine, the carburettor atomises petrol into the air stream drawn into the engine, producing an air-fuel mixture in the right proportion for combustion. Modern engines mostly use fuel injection instead, but the carburettor is the classic device.

Callipers measure lengths and diameters, a chronometer is a precision clock used in navigation, and an electrometer measures electric charge or potential difference. None of them mixes fuel with air.

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