The principle upon which a lactometer works is
(a) viscosity
(b) density
(c) surface tension
(d) presence of protein
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The principle upon which a lactometer works is
(a) viscosity
(b) density
(c) surface tension
(d) presence of protein
The principle upon which a lactometer works is
(a) viscosity
(b) density
(c) surface tension
(d) presence of protein
Answer is : (b) density
Lactometer is a device used for testing the purity of milk. It measures relative density of milk with respect to water, which is also called specific gravity. If the specific gravity of a sample of milk is within the approved ranges, the milk is pure. If it is not, then there is some adulteration in milk.