Which of the following quantities has a unit but is dimensionless?

How much energy in $kWh$ is obtained by eating an ice cream labeled as $700 \ kcal$?

Express:
$(a)$ The energy required to break one bond in $DNA$ in $eV$.
$(b)$ The kinetic energy of an air molecule $(10^{-21} \; J)$ in $eV$.
$(c)$ The daily intake of a human adult in kilocalories.

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$(A)$ Angular Impulse	$(I) [M^0 L^2 T^{-2}]$
$(B)$ Latent Heat	$(II) [M L^2 T^{-3} A^{-1}]$
$(C)$ Electrical resistivity	$(III) [M L^2 T^{-1}]$
$(D)$ Electromotive force	$(IV) [M L^3 T^{-3} A^{-2}]$

Choose the correct answer from the options given below:

Which of the following groups has different dimensions?

The fundamental unit which has the same power in the dimensional formula of surface tension and viscosity is