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Positive Beilstein test for halogen show...

Positive Beilstein test for halogen shows that

A

a halogen is definitely present

B

a halogen may be present

C

a halogen is absent

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
A positive Beilstein's test for halogens does not always indicate the presence of halogen since some halogen free compounds viz. urea, thiourea, amides etc. also respond this test. The reason being the fact that these halogen free compounds form cuprous cyanide which is volatile and decomposes to copper which burns with green flame.
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A2Z-CLASSIFICTION, PURIFICATION AND NOMENCLATURE OF ORGANIC COMPOUNDS-Purification Of Organic Compounds
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