MEDIUMMCQ SINGLENEET ChemistryPhysical ChemistryMole _ Equivalent ConceptGeneral
Assertion :Density is expressed as g mL–1 whereas specific gravity is dimension less. Reason :Specific gravity is ratio of the masses of solution and solvent.
A.If both assertion and reason are correct and reason
B.If both assertion and reason are true but reason is
C.If assertion is true but reason is false.✓ Correct
D.If reason is true but assertion is false.
Explanation
Density is mass/volume and expressed as g /ml. Specific gravity is the ratio of density of a substance compared to the density of fresh water at 39 F. At this temperature, the density of water has greatest value = 1 g /mL. Therefore, it is dimensionless. Laws of Chemical Combination & Dalton's Atomic Theory
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