Chemistry · Chemical Sensors
Which type of sensor used in breathalyzers operates on the principle of a change in electrical resistance of a semiconductor in the presence of alcohol gases?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Semiconductor metal oxide sensors✓
- 2Infrared Optical Sensors
- 3Electrochemical fuel cell sensors
- 4Piezoresistive Sensors
Correct answer
Semiconductor metal oxide sensors
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