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# Alcohol is used in manometer because

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## Alcohol: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.Alcohols have no colour. Alcohols have a sweet odour except few. They have a blue flame and are combustible. They don't emit any smoke when they're burning. 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.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.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.

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