|The density of the substance is defined as the mass per unit volume of that substance.
|Specific gravity of a substance is defined as the ratio of the mass of certain volume of it to the mass of the same volume of water at 4˚C.
|Its unit is kg/m3 or g/c.c.
|It has no unit because it is the ratio of same physical quantity.
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Question asked by chimini_chand
Answered by drupadh_thapa