engineering recuitment BARC Stipendiary Trainee Category I 2023 Mock Test Chemical Sciences Structure Determination of Organic Compounds 1h NMR and 13c NMR Spectroscopy
The order of chemical shifts (δ value) in the 1H NMR spectrum of crotonaldehyde is
1
olefinic > CHO > Me
2
CHO > Me > olefinic
3
CHO > olefinic > Me
4
olefinic > Me > CHO