| 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:

Identify the product formed (A and E)
Find the area of the region \[ R = \{(x, y) : xy \le 27,\; 1 \le y \le x^2 \}. \]
An object of uniform density rolls up the curved path with the initial velocity $v_o$ as shown in the figure. If the maximum height attained by an object is $\frac{7v_o^2}{10 g}$ ($g=$ acceleration due to gravity), the object is a _______

A body of mass $m$ is taken from the surface of earth to a height equal to twice the radius of earth ($R_e$). The increase in potential energy will be ____ ($g$ is acceleration due to gravity at the surface of earth)