A violet compound of manganese (P) decomposes on heating to liberate oxygen and compounds (Q) and (R ) of manganese are formed. Compound ( R) reacts with KOH in the presence of potassium nitrate to give compound (Q). On heating compound (R ) with conc. `H_2SO_4` and NaCl, Chlorine gas is liberated and a compound (S) of manganese along with other products is formed. Compound P to S are

Options

A. `{:(" "P," "Q," "R," "S),(KMnO_4,K_2MnO_4,MnCl_2,MnO_2):}`
B. `{:(" "P," "Q," "R," "S),(K_2MnO_4,MnO_2,KMnO_4,MnCl_2):}`
C. `{:(" "P," "Q," "R," "S),(KMnO_4,K_2MnO_4,MnO_2,MnCl_2):}`
D. `{:(" "P," "Q," "R," "S),(K_2MnO_4,KMnO_4,MnO_2,MnCl_2):}`

Answer

C

Explanation

`P=KMnO_4,Q=K_2MnO_4,R=MnO_4,S=MnCl_2`
`underset((P))(2KMnO_4)overset(Delta)tounderset((Q))(K_2MnO_4)+underset((S))(MnO_2)+O_2`
`2MnO_2+4KOH+O_2tounderset((S))(MnCl_2)+2NaHSO_4+2H_2O+Cl_2`