Pick out the wrong statement.

Conversion of SO₂ to SO₃ in Monsanto-4 pass converter is about 98%

The chemical formula of oleum is H₂S₂O₇, which is formed by saturating sulphuric acid with sulphur trioxide

Vitriol oil is nothing but technical sulphuric acid

Decomposition of sulphuric acid on heating does not start before its boiling

Answer

Answer: Option D

Answer: Option D

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