Proteins when heated with conc. $H {N O}_{3}$ give a yellow colour. This is

Hoppe's test

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Acid base test

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Biurret-test

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Xanthoprotic test

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Solution

The correct option is D Xanthoprotic test
Proteins which consists of $α$ -amino acid containing benzene ring e.g tyrosine give xanthoprotic test.

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Similar questions

Proteins when heated with conc. HNO₃ give a yellow colour. This is

[CPMT 1989]

H {N O}_{3}

H N O_{3}

H N O_{3}

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