Match the items of Columns I and II and mark the correct option.

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1. H₂SO₄ is used in lead storage batteries

2. CCl₃NO₂ is known as tear gas

3. Cl₂ have highest electron gain enthalpy because it need only one electron to compete octect. thus to attain stable configuration .

4. Oxygen family is known as chalcogen therefore sulphur is also chalcogen