Question

Alcohol is used in manometer because

Answer 1

Alcohol:

1. Any class of organic compounds that include one or more hydroxyl ($\mathrm{OH}$) groups linked to an alkyl group's carbon atom is considered as alcohol.
2. Alcohols have no colour.
3. Alcohols have a sweet odour except few.
4. They have a blue flame and are combustible. They don't emit any smoke when they're burning.
5. At room temperature, they are usually liquid. Despite the fact that glycerol is a viscous liquid when compared to other hydrocarbons, they often have greater boiling points.
6. They are utilized in the manometer because it is a low-density liquid. Low-density liquids can be used to regulate and improve the deflections of the manometer.
7. In the inclined tube, alcohol has an adequate and very visible meniscus. It also has a low density, allowing for a greater pressure difference length. As a result, precision is achieved.

Therefore, alcohols are used in manometers because of their low density.