61. Which molecule below has a significant band in the IR at 3400 cm^-1 (strong and broad)?
(A) CH₃CH₂CH₂OH
(B) CH₃C≡CCH₂CH₃
(C) CH₃CH₂CH(NH₂)CH₃
(D) (CH₃)₃N

考題觀念本題測驗紅外線光譜（IR S...