In which of the following states is the Ratnagiri district, famous for its deposits of iron ore, located?

A short bar magnet is placed in the magnetic meridian of the earth with North Pole pointing north. Neutral points are found at a distance of $30 \mathrm{cm}$ from the magnet on the East-West line, drawn through the middle point of the magnet. The magnetic moment of the magnet in ${\mathrm{Am}}^2$ is close to:

(Given $\frac{{\mu }_0}{4\pi }={10}^{-7}$ in SI units and $B_H=$ Horizontal component of earth's magnetic field $=3.6\times {10}^{-5}$ Tesla.)

$\left[\mathrm{X}\right]+$ dil. ${\mathrm{H}}_2{\mathrm{SO}}_4⟶\left[\mathrm{Y}\right]:$ Colourless, suffocating gas

$\left[\mathrm{Y}\right]+{\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7+{\mathrm{H}}_2{\mathrm{SO}}_4⟶$ Green colouration of solution

Then, $\left[\mathrm{X}\right]$ and $\left[\mathrm{Y}\right]$ are