Q. Which of the following statement is not applicable to Beilstein test?
A) Green or bluish green flame is due to the formation of volatile cupric halides
B) It does not tell us to which halogen is present in the organic compound
C) It is very sensitive test can be easily performed
D) It is a sure test for the presence of halogen
Explanation
(d)
If organic compound gives blue or green colour at the tip of red hot copper wire, this indicates the presence of halogens in the compound. However, compounds like urea, thiourea etc also give blue or green colour in this test even in the absence of halogens, thus, it is not a sure test for halogens
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.