Question

Which of the following are incorrect SI units?

• A. Amount of substance in mol L${}^{-1}$
• B. Pressure of gas in pascal
• C. Density of a solid in kg m${}^{-3}$
• D. Force in newton

Answer 1

The correct option is A Amount of substance in mol L${}^{-1}$

The SI units is based on seven base units. These are metre, kilogram, second, ampere, kelvin, mole and candela.

Here Pascal is SI unit of pressure

Newton is unit of force

Amount of substance has a SI unit $mol/m^3$

Option A is the incorrect SI Unit.