A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of a colourless gas Y. Identify X and Y.

Options

A. `X=CO_2, Y=Cl_2`
B. `X=Cl_2, Y=CO_2`
C. `X=Cl_2, Y=H_2`
D. `X=H_2, Y=Cl_2`

Answer

C