Question

Name the device used to check purity of milk. Aldo name the principle on which it works

Answer 1

Lactometer is the  instrument that is used to check the  purity of milk by measuring its density.

It works on the Archimede's principle that a solid suspended in a fluid will be buoyed up by a force equal to the weight of the fluid displaced.

Answer 2

Lactometer is the device used to check the purity of milk. It works under archemedies principle.