Question

A solution reacts with marble chips to produce a gas which turns lime water milky. The solution contains ______.

Options

• Na₂SO₄

• CaSO₄

• H₂SO₄

• K₂SO₄

Answer 1

A solution reacts with marble chips to produce a gas which turns lime water milky. The solution contains H₂SO₄.

Explanation:

Marble chips consist of calcium carbonate, which chemically reacts with acids to liberate carbon dioxide gas. This generated carbon dioxide gas is what reacts with lime water to form a white precipitate, turning the solution milky. Since H₂SO₄ can trigger this reaction.