34. Which of the following is not a constitutional isomer with the molecular formula, C5H8?
a. cyclopentene
b. 2-pentyne
c. 1-methylcyclobutane
d. 3-methylcyclobutene
35. Which of the following cannot exist as a geometric isomer with the molecular formula, C6H13N?
a. 1-amino-2-methylcyclopentane
b. 1-amino-3-methylcyclopentane
c. 1-amino-2-pentene
d. 1-amino-1-methylcyclopentane