Question

0.1M solution of which one of these substances will be basic?

• A. Sodium borate
• B. Calcium nitrate
• C. $NH_4Cl$
• D. Sodium sulphate

Answer 1

Answer: (A)

Sodium borate

Answer 2

On hydrolysis sodium borate form sodium hydroxide and boric acid, so the solution will show basic character because sodium hydroxide is strong base and boric acid is weak acid. While solution of sodium sulphate is neutral and that of $NH_4Cl$ and calcium nitrate is acidic.