Lactometers (used to determine the purity of a sample of milk) and hyd – McqOptions

MCQOPTIONS

1.	Lactometers (used to determine the purity of a sample of milk) and hydrometers (used to determine the density of liquids) are based on the ______ principle.
A.	Archimedes
B.	Special Relativity
C.	Relativity
D.	Uncertainty
Answer» B. Special Relativity

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