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If on adding FeCl(3) solution to acidifi...

If on adding `FeCl_(3)` solution to acidifies Lassaigne's solution a blood red coloration is produced, it indicates the presence of

A

N and S in the compound

B

S in the compound

C

N and P in the compound

D

Br in the compound

Text Solution

Verified by Experts

The correct Answer is:
A
When N and S, both are present in compound, it forms NaCNS with sodium extract. This gives ferric thiocyanate with `FeCl_(3)` solution, hence blood red colour develops.
`2NaCNS+FeCl_(3)rarr underset("Blood red")(Fe(CNS)_(3))+2NaCl`
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