Ethyl alcohol, also known as ethanol, is used in making liquors, medicines, and as a fuel in aircraft.

1. Making Liquors:
- Ethyl alcohol is the main ingredient in alcoholic beverages such as beer, wine, and spirits.
- During the fermentation process, yeast converts sugar into ethanol, resulting in the production of alcohol.
- Different types of liquors are made by varying the fermentation process, adding flavors, and aging the alcohol.

2. Medicines:
- Ethyl alcohol is widely used in the pharmaceutical industry as a solvent for various medications.
- It helps dissolve active ingredients and aids in the formulation of different dosage forms such as syrups, tinctures, and solutions.
- Ethanol is also used as a disinfectant and antiseptic to clean medical equipment and surfaces due to its antimicrobial properties.

3. Fuel in Aircraft:
- Ethanol, mixed with gasoline, is used as a fuel additive in aircraft.
- It helps to increase the octane rating of the fuel, which improves engine performance and reduces emissions.
- Ethanol is commonly used in aviation gasoline (avgas) for piston-engine aircraft.
- It is a renewable fuel source and can be derived from various feedstocks such as corn, sugarcane, and cellulosic materials.

Comparison with other options:

a) Propyl alcohol (propanol):
- Propyl alcohol is mainly used as a solvent and intermediate in chemical synthesis.
- It is not commonly used in making liquors or as a fuel in aircraft.

b) Dimethyl alcohol (methanol):
- Dimethyl alcohol, also known as methanol, is used as a solvent, antifreeze, and fuel in some applications.
- It is primarily used in industrial processes and as a fuel additive in gasoline.
- While methanol is used as a fuel for racing cars, it is not commonly used in commercial aircraft.

c) Ethyl alcohol (ethanol):
- As explained above, ethyl alcohol is used in making liquors, medicines, and as a fuel in aircraft.

d) Methyl alcohol (methanol):
- Methyl alcohol, also known as methanol, is mainly used as a solvent and fuel.
- It is used in various industrial applications, but it is not commonly used in making liquors or as a fuel in aircraft.