Which of the following fragment peaks would not be present in the mass spectrum of n-hexane?

A) 87
B) 71
C) 57
D) 43
E) 29

In the boat conformation of cyclohexane, the "flagpole" hydrogens are located ________.

A) on the same carbon
B) on adjacent carbons
C) on C-1 and C-3
D) on C-1 and C-4
E) none of the above

The structure of cellulose is shown below. What type of polymer is it?

A) Alternating copolymer
B) Chain-growth polymer
C) Step-growth polymer
D) Ziegler-Natta polymer