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Which of the following compounds does no...

Which of the following compounds does not give Prussian blue color during Lassaigne's test for the detection of nitrogen?

A

`NH_(2)NH_(2).HCl`

B

`H_(2)NCONH_(2)`

C

`C_(6)H_(5)NHNH_(2).HCl`

D

`H_(2)NCONHNH_(2).HCl`

Text Solution

Verified by Experts

The correct Answer is:
A
Lassaigne's test for `N` is meant only for organic compounds. The compound `H_(2)N N H.HCl` fails to do so since it does not contain `C` which is required to form `NaCN` during sodium fusion.
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