Q114 · Practice questionSimple familiar1 mark
QUESTION 114
Which statement correctly describes a repeat unit of PTFE compared with a repeat unit of polyethene?
(A)
PTFE has an ester linkage in its backbone.
(B)
PTFE has fluorine atoms in place of the hydrogen atoms attached to the two backbone carbons.
(C)
PTFE forms by eliminating water from ethene.
(D)
PTFE has carbon–carbon double bonds throughout its backbone.
WORKED SOLUTION
1 markAnswer B
Answer
B
Working
PTFE has repeat unit and polyethene has . Both have single carbon–carbon backbone bonds.
Marking criteria
- Select B. [1 mark]
Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
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