Zn+H_(2)Sarrow ZnS+H_(2) combustion double replacement single replacement

The given chemical reaction is $Zn+H_{2}S\rightarrow ZnS+H_{2}$. In this reaction, Zinc (Zn) replaces Hydrogen (H) in Hydrogen Sulfide (H2S) to form Zinc Sulfide (ZnS) and Hydrogen gas (H2). This is a classic example of a single replacement reaction, where one element replaces another element in a compound. Therefore, the correct answer is single replacement.