What present of alcohol is in hard liquor?

Ethyl alcohol, also called ethanol or grain alcohol, is the type of alcohol present in hard liquor. It is a clear, colourless liquid with a slightly pungent odour and a bitter taste. Ethyl alcohol is produced by the fermentation of sugars by yeasts or bacteria. In hard liquor, the ethyl alcohol content typically ranges from 40% to 60% by volume.