
| List-I (Reagent) | List-II (Products) | ||
| A | ![]() | I | ![]() |
| B | HBF4 \(\triangle\) | II | ![]() |
| C | Cu, HCI | III | ![]() |
| D | CuCN/ KCN | IV | ![]() |
Calculate the potential for half-cell containing 0.01 M K\(_2\)Cr\(_2\)O\(_7\)(aq), 0.01 M Cr\(^{3+}\)(aq), and 1.0 x 10\(^{-4}\) M H\(^+\)(aq).

A square loop of sides \( a = 1 \, {m} \) is held normally in front of a point charge \( q = 1 \, {C} \). The flux of the electric field through the shaded region is \( \frac{5}{p} \times \frac{1}{\varepsilon_0} \, {Nm}^2/{C} \), where the value of \( p \) is: