Alcohol Alcohol are hydroxy derivative of aliphatic hydrocarbon . In day to day there are many uses of alcohol such as disinfectant, in cough syrup at many more.  Alcohoilic Beverages. 1) malted liquors. 2) wines. 3) Spirit other forms of alcohols . 1) Absolute alcohol.     which has 99%w/w of ethanol. 2) Rectified Spirit.    which has 90%w/w of ethanol. Action of Alcohol on each organ system. there are many action of alcohol on body . but below is short information. 1) CVS    Small Dose ; in small dose it does not affect B.P . moderate Dose ; Cause tychycardia and small rise in B.P Large Dose : Fall in B.P 2) CNS  In small amount alcohol stimulate the central nervous system . but in larger dose its depreses the CNS. Reference; K.D. tripathi  book of essential of Medical Pharmacology . seven edition.