Question

Which of the following statements is incorrect –
a. Density of water is 1000kg/m3
b. Relative Density of water is 1kg/m3
c. Density of water is 1.0x103
kg/m
d. Relative density of water is 1

Answer 1

b) state ment is incorrect as relative density have no unit 
The relative density = density of object / density of water 
 In this Units will cancel out so relative density have no unit

Answer 2

Statement (B) is incorrect as in Relative density two densities are compared which cancel out the S.I. unit of density, hence relative density has no unit.