5. Define relative density and give its S.I. unit.

1.	5. Define relative density and give its S.I. unit.
Answer» The ratio of the density of a substance to the density of water at 4°C is known as the relative density of the substance. Relative density = Density of the substance/Density of water at 4°C. As both the numerator and the denominator have the same unit (i.e. kg/m3) they get cancelled. Hence relative density has no unit.

Answer»

The ratio of the density of a substance to the density of water at 4°C is known as the relative density of the substance.

Relative density = Density of the substance/Density of water at 4°C.

As both the numerator and the denominator have the same unit (i.e. kg/m3) they get cancelled. Hence relative density has no unit.

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