Question

Tonic in general contain:
(A) Ether
(B) Methanol
(C) Ethanol
(D) Rectified spirit

Answer 1

Hint:Ether are the organic compounds which are flammable under high pressure. Methanol is an alcohol which has a methyl group attached to it. Ethanol is also an alcohol which has an ethyl group attached to the hydroxyl group. Rectified spirit is a stimulant which helps in formation of diluted spirit.

Complete answer:Alcohol is the major component which is used in cough syrups and other medications. The alcohol can come from drinking alcoholic beverages or it can be produced naturally in the body. So this concludes that it can be produced from endogenous ethanol which is produced in everyone's body. So ethanol is an alcohol which is volatile, flammable and colourless liquid. It is considered as a psychoactive substance which is used actively in alcoholic drinks. It is used in high concentration to dissolve many water insoluble medications. The cold medicines, mouth washes tend to contain 25% of the ethanol and it is avoided in many medications because some individuals can have adverse reactions to ethanol causing alcohol induced respiratory reactions. So ethanol is used widely in cough syrups and tonics to cure the respiratory as well as cough related diseases. As it tends to have high solubility so it is used in tonics.

So the correct answer is option (C).

Note:Ethanol is an alcohol which is prepared by the sugar fermentation by yeast or through the petrochemical processes which are ethylene hydration. It is used as a disinfectant and antiseptic. It is widely used as a solvent and as an alternative fuel too.