Sodium hydroxide (NaOH) is a strong base. It undergoes neutralization reactions with acidic and amphoteric oxides but does not react with basic oxides .

• $B_2O_3$ and $SiO_2$ are acidic oxides, meaning they will readily react with NaOH to form their respective salts.
• $BeO$ is an amphoteric oxide, which means it can behave as both an acid and a base. Therefore, it will react with NaOH.
• $CaO$ is a basic oxide. Since basic oxides do not react with bases, $CaO$ is not expected to react with NaOH .