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Which of the following compounds does no...

Which of the following compounds does not give blood red colouration when its Lassaigne's extract is treated with alkali and ferric chloride?

A

thiourea

B

diphenyl sulphide

C

phenylhydrazine

D

benzamide

Text Solution

Verified by Experts

The correct Answer is:
B, C, D
Thiourea `(NH_2CSNH_2)` contains both Nand Sand hence gives blood red colouration in Lassaigne.s test.
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