Dimensional Formulae and Dimensional Equations

Which of the following are not unit of time?

Which of the following ratios express pressure?

If the Planck's constant $\left(h\right)$ and the speed of light in vacuum $\left(c\right)$ are taken as two fundamental quantities, which one of the following can, in addition, be taken to express length, mass and time in terms of the three choosen fundamental quantities.

Photon is quantum of radiation with energy $\mathrm{E}=\mathrm{hv},$ where $\mathrm{v}$ is frequency and $\mathrm{h}$ is Planck's constant .The dimensions of h are the same as that of:

On the basis of dimensions, decide which of the following relations for the displacement of particle undergoing simple harmonic motion is not correct.

If the momentum $\left(P\right)$, area $\left(A\right)$ and time $\left(T\right)$ are taken to be fundamental quantities, then energy has dimensional formula.

Young's modulus of steel is $1.9\times {10}^{11}\mathrm{N}/{\mathrm{m}}^2$. When expressed in CGS units of $dyne/c{m}^2$. It will be equal to$\left(1N={10}^5 dynes, and 1 m^2={10}^4 c{m}^2\right)$.