Assertion : The reaction of ammonia solution with calomel is a disproportionation reaction in which a mixture Hg(II) amido chloride and mercury are formed
Reason : In a disproportionation reaction species under reaction is neither oxidised nor reduced.

Options

A. Both A and R are true and R is a correct explanation of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. Both A and R are false

Answer

C

Explanation

`Hg_(2)Cl_(2)+NH_(3)toHg(l)+HgNH_(2)Cl+NH_(4)Cl`
So, `Hg_(2)^(2+)toHg+Hg^(2+)`
In a disproportionation reaction, species undergoes both oxidation and reduction.