A pink coloured dye complex is formed when air containing NO₂ is passed in an

Question

A pink coloured dye complex is formed when air containing NO₂ is passed in an absorbing solution consisting of __________ and diamine dissolved in the acetic acid medium.

Options:

A . Sulphuric acid

B . Sulphonyl

C . Sulphonic acid

D . Sulphanilic acid

Answer: Option D
Answer: (d).Sulphanilic acid

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