The product(s) formed in the following reaction is/are
Zn+2KOH (hot conc.)→ ______
K2ZnO2 + H2
Zinc reacts with hot concentrated caustic alkalis (NaOH, KOH) to give the corresponding soluble salt and liberate hydrogen. Here, zinc reacts with hot concentrated KOH to give potassium zincate(K2ZnO2) and hydrogen is released in the process.