Which one of the following nitro compounds when react with nitrous acid followed by treatment with alkali produces blue colour?A. 2-methyl-2-nitropropaneB. 2-methyl-1-nitropropaneC. 2-nitropropaneD. nitrobenzene

Which one of the following nitro compounds when react with nitrous aci

1.	Which one of the following nitro compounds when react with nitrous acid followed by treatment with alkali produces blue colour?A. 2-methyl-2-nitropropaneB. 2-methyl-1-nitropropaneC. 2-nitropropaneD. nitrobenzene
Answer» Correct Answer - C Nitro group attached to secondary carbon atom will give pseudonitrol with `HNO_2` which on further treatment with alkali gives blue colour. `Hundersetunderset(CH_3)\|oversetoverset(CH_3)\|C-NO_2overset"HONO"to H_3C-underset(NO)underset\|overset(CH_3)overset\|C-NO_2 overset"NaOH"to underset"Blue colour "(CH_3-undersetunderset(NO_2)\|CH-CH_3)`

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Which one of the following nitro compounds when react with nitrous acid followed by treatment with alkali produces blue colour?A. 2-methyl-2-nitropropaneB. 2-methyl-1-nitropropaneC. 2-nitropropaneD. nitrobenzene

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