Question

An alkali formed when a basic oxide dissolves in water is :

• A. $KOH$
• B. $N{H}_{4}OH$
• C. both $A$ and $B$
• D. none of the above

Answer 1

Answer: (A)

All the metal oxides are basic in nature which react with water to form hydroxides.
${Na}_{2}O+H_{2}O\to NaOH{K}_{2}O+H_{2}O\to KOH$