Biuret test is characteristic of compounds containing the functional group

Question

Biuret test is characteristic of compounds containing the functional group (A)  (B)  -NH2  (C)  -CONH-  (D)  -C≡ H

Tardigrade Admin · Accepted Answer

All compounds containing peptide linkage (-CO⋅ NH-) give respond to Biuret test. For example, urea and proteins. Biuret test for urea: On heating, urea loses NH3 and forms solid biuret. This is dissolved in the least amount of water and made alkaline by adding a few drops of sodium hydroxide. The alkaline solution, when treated with 1-2 drops of dilute CuSO4 solution, gives a violet colour. This test is known as Biuret test.

Q. Biuret test is characteristic of compounds containing the functional group

$- N H_{2}$

$- CON H -$

$- C \equiv H$

Q. Biuret test is characteristic of compounds containing the functional group

−NH2​

−CONH−

−C≡H

$- N H_{2}$

$- CON H -$

$- C \equiv H$