Question

Copper sulphate when dissolved in alkali gives a pale precipitate of ______.

Options

• pink colour

• blue colour

• white colour

• green colour

Answer 1

Copper sulphate when dissolved in alkali gives a pale precipitate of blue colour.

Explanation:

Copper sulphate reacts with an alkali (like NaOH) to form a characteristic pale blue precipitate of copper hydroxide [Cu(OH)₂].