Which of the following is insoluble both in acid and water but soluble in aq caustic alkali?

Benzene sulphonic acid

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Aniline

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Sulphanilic acid

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N, N dimethyl amino methane

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Solution

The correct option is C Sulphanilic acid
Sulphanilic acid is insoluble in both water as well as in acid because it can not form hydrogen bonding with the water molecule. But it is soluble in aqueous mineral acid like $H F, H C l, H N O_{3}$ because they are able to form a hydrogen bond with mineral acids.

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Similar questions

Which of the following are properties of $N H_{3}$ ?

M g C l_{2}

Methane is almost insoluble in water, but soluble in organic solvents.

N H_{3}

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