A pink coloured dye complex is formed when air containing NO2 is passe – McqOptions

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1.	A pink coloured dye complex is formed when air containing NO2 is passed in an absorbing solution consisting of __________ and diamine dissolved in acetic acid medium.$
A.	Sulphuric acid
B.	Sulphonyl
C.	Sulphonic acid
D.	Sulphanilic acid
Answer» E.

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