Proteins when heated with conc. $H N O_{3}$ give yellow colour. This is known as?

Hoppe's test

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Acid-base test

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Biuret's test

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Xanthoprotic test

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Solution

The correct option is D Xanthoprotic test
Xanthoproteic test—When a protein is treated with conc. H2SO4, a yellow colour is produced. This test is given by a protein which consists of α-amino-acids containing a benzene ring such as tyrosine, phenylalanine etc.

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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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