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in-the-determination-of-sulphur-dioxide-by-p-rosaniline-method-the-end-product-is

In the determination of sulphur dioxide by p-rosaniline method, the end product is

[A] p-rosaniline sulfonic acid

[B] methyl p-rosaniline

[C] p-rosaniline methyl sulfonic acid

[D] sulfo methyl p-rosaniline

Answer & Explanation
Answer: p-rosaniline methyl sulfonic acid