A dihalogen derivative 'X' of a hydrocarbon with three carbon atoms reacts with alcoholic KOH and produces another hydrocarbon which forms a red precipitate with ammonia and \(Cu_2Cl_2\). 'X' gives an aldehyde on reaction with aqueous KOH. The compound 'X' is

1,1-Dichloropropane 

The correct answer is option 3. 1,1-Dichloropropane.