Question

Specific gravity of a fluid is a dimensionless quantity. It is the ratio of density of fluid to the density of water.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (A)

If both assertion and reason are true and reason is the correct explanation of assertion

Answer 2

The specific gravity or relative density is defined as the ratio of the density of the substance to the density of water at $4^{\circ} C$. Since specific gravity is a pure ratio, it has no unit and hence, no dimensions.