explain the construction and working of hydrometer
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Answer:
A hydrometer usually consists of a sealed hollow glass tube with a wider bottom portion for buoyancy, a ballast such as lead or mercury for stability, and a narrow stem with graduations for measuring. ... The point at which the surface of the liquid touches the stem of the hydrometer correlates to relative density.
Explanation:
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Answer:-
Hydrometer
⟶ It is an instrument used for measuring the relative density of liquids. Hydrometer is generally made of glass and has a cylindrical stem and a bulb with with either mercury or lead shots to to make it float upright . It usually contents of skill inside the stem so that the specific gravity can be read directly.
The liquid to test is word in a graduated cylinder or a tall and the hydrometer is lowered into the liquid until it floats freely. the point at which the surface of the liquid touches the steam of the hydrometer is noted and the value on the scale is read.
↪More Information↩
- A special type of hydrometer called lactometer is used for testing the purity of milk by measuring is density . It is also used in breweries to estimate the content of alcohol.
- Relative density ⟶ The ratio of the density of a substance with respect to the density of water at 4° C.