On passing SO₂ through chlorine water, the acid produced is :

1. H₂SO₃
2. HNO₃
3. H₂SO₄
4. H₂PO₄

When HCl is prepared by the reaction of NaCl with H₂SO₄, the property of H₂SO₄ exhibited is :

1. Dehydrating agent
2. Drying agent
3. Oxidising property
4. Non volatile acid

The substance added to SO₃ to manufacture H₂SO₄ by contact process is :

1. H₂O
2. H₂SO₄
3. H₂S₂O₇
4. H₂S

The role of sulphuric acid in the reaction given below is :

S + 2H₂SO₄ ⟶ 3SO₂ + 2H₂O

1. Non volatile acid
2. Oxidising agent
3. Dehydrating agent
4. None of the above