Drinking alcohol and driving may cause serious accidents. To discourage this, police randomly test drivers for alcohol using a breath analyser. The breath analyser works because (a) Alcohol makes the breath dry and the machine registers moisture (b) Alcohol makes the breath hotter which changes the machine reading (c) Alcohol causes more saliva which the machine checks. (d) Alcohol in the breath cause a chemical change registered by the machine.

Drinking alcohol and driving may cause serious accidents. To discourag

1.	Drinking alcohol and driving may cause serious accidents. To discourage this, police randomly test drivers for alcohol using a breath analyser. The breath analyser works because (a) Alcohol makes the breath dry and the machine registers moisture (b) Alcohol makes the breath hotter which changes the machine reading (c) Alcohol causes more saliva which the machine checks. (d) Alcohol in the breath cause a chemical change registered by the machine.
Answer» Drinking alcohol and driving may cause serious accidents. To discourage this, police randomly test drivers for alcohol using a breath analyser. The breath analyser works because Alcohol makes the breath hotter which changes the machine reading.