Consider the following statement: `S_(1)`:`Cu^(2+)
Channel: Doubtnut
Date: 2020-01-26

Consider the following statement: `S_(1)`:`Cu^(2+)` ions are reduced to `Cu^(+)` by potassium iodide and potassium cyanide both, when taken in excess `S_(2)`:`H_(2)S` will precipitate the sulphide of all the metals from the solutions of chlorides of `Cu,Zn` and `Cd` if the solution is aqueous. `S_(3)`:The presence of magnesium is confirmed in qualitative analysis by the formation of a white crystal `S_(4)` :Calomel on reaction with potassium iodide gives red precipitate. and arrange in the order of true/false.