Which of the following is not a dimensionless quantity?

The dimensional formula of a physical quantity represented by $\frac{e^2}{4 \pi \varepsilon_0 \hbar}$ is (where $e$ is the charge of an electron,$\varepsilon_0$ is the permittivity of free space,and $\hbar$ is the reduced Planck's constant). Note: The expression $\frac{e^2}{4 \pi \varepsilon_0 \hbar}$ is equivalent to the fine-structure constant $\alpha$ multiplied by the speed of light $c$.

The dimensional formula of heat energy is:

Which one of the following is a dimensionless physical quantity?

In $SI$ units,$kg m^2 s^{-2}$ is equivalent to which of the following?

Write the dimensional formula of power. Is power a vector or scalar quantity?