When a brown compound of Mn (A) is treated with HCI, it gives a gas (B). The gas (B) taken in excess reacts with `NH_3` to give an explosive compound (C).
The compounds A, B and C are

Options

A. `A= MnO_2 , B= Cl_2 , C= NCl_3`
B. `A = MnO, B= Cl_2 , C= NH_4 Cl`
C. `A= Mn_3 O_4 , B= Cl_2 , C= NCl_3`
D. `A= MnO_3, B= Cl_2 , C= NCl_2`

Answer

A

Explanation

`underset((A))(MnO_2) + 4HCl to underset((B))(Cl_2) + MnCl_2 + 2H_2 O`
`underset("(excess)")(3Cl_2) + NH_3 to underset((C))(NCl_3) + 3HCl`