18.Which test/s is/are used for the detection of nitro functional group? *
Fehling Test
Feigl Test
Tollen’s Test
Mulliken-Barker Test
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Mulliken barker test is used for the detection of the mono nitro group in our compound. -NO2 is reduced to -NHOH ie hydroxylamine group by a neutral reducing agent. Thus formed hydroxylamine reduces the Tollens reagent and oxidised it to a nitroso compound. The above reaction can be written as
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