See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

A is NH4NO3 4 3 3 3 2 NH NO NaOH NaNO NH H O       3 4 NH HCl NH Cl   3 3 2 2 2 NaNO 4Zn 7NaOH NH 4Na ZnO 2H O          4 3 2 2 NH NO N O 2H O