Three layers of liquid are flowing over fixed solid surface as shown below. The correct order of velocity of liquid in these layers is

A flask contains 98 mg of $\mathrm{H}_2 \mathrm{SO}_4$. If $3.01 \times 10^{20}$ molecules of $\mathrm{H}_2 \mathrm{SO}_4$ are removed from the flask. The number of moles of $\mathrm{H}_2 \mathrm{SO}_4$ remained in flask is

$$ \left(N_A=6.02 \times 10^{23}\right) $$

Identify the correct equation relating $\Delta H, \Delta U$ and $\Delta T$ for 1 mole of an ideal gas from the following. ( $R=$ gas constant)

The number of extensive properties in the following list is enthalpy, density, volume, internal energy, temperature.