Consider the following statements:
Statement-1: `Cu^(2+)` ions are reduced to `Cu^(+)` by potassium iodide and potassium cyanide both, when taken in excess.
Statement-2: `H_(2)S` will precipitate the sulphide of all the metals from the solution from the solutions of chlorides of `Cu,Zn` and Cd if the solution is aqueous.
Statement-3: The presence of magnesium is confirmed in qualitative analysis by the formation of a white crystalline precipitate of `MgNH_(4)PO_(4)`.
Statement-4: Calmol on reaction with potassium iodide gives red precipitate.

Options

A. `T T F F`
B. `TFTF`
C. `T T T T`
D. `T T T F`

Answer

D

Explanation

`Hg_(2)CI_(2) overset(KI)rarr underset(("Green ppt"))(Hg_(2)I_(2)darr)`