Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Chemical Sciences Characterisation of Inorganic Compounds IR Spectroscopy
In an IR spectra of 1-octyne and 4-octyne, the IR-spectra of 4-octyne does not have C ≡ C stretch absorption peak. The reason for this observation is that _________.
1
Conjugation moves stretch to lower frequency
2
4-octyne reacts with KBr while 1-octyne does not
3
4-octyne has symmetrically substituted triple bond while 1-octyne does not
4
4-octyne is inactive in IR range whereas 1-octyne is highly active