| List I -complex | List II-CFSE | ||
| A | [Cu(NH3)6]2+ | I | -6.0 |
| B | [Ti(H2O)6]3+ | II | -2.0 |
| C | [Fe(CN)6]3- | III | -1.2 |
| D | [NiF6]4- | IV | -0.4 |
Choose the correct answer from the options given below:
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).

In the given figure, the blocks $A$, $B$ and $C$ weigh $4\,\text{kg}$, $6\,\text{kg}$ and $8\,\text{kg}$ respectively. The coefficient of sliding friction between any two surfaces is $0.5$. The force $\vec{F}$ required to slide the block $C$ with constant speed is ___ N.
(Given: $g = 10\,\text{m s}^{-2}$) 
Method used for separation of mixture of products (B and C) obtained in the following reaction is: 