The document is a quiz on alkanes with 10 multiple choice questions testing knowledge of alkane structure, naming, and isomer identification. It provides the structures of 6 alkanes to name and identify isomers among. The general formula for alkanes is given as CnH2n+2.

1. Quiz on alkanes=1 with answers
Name……………………………………………..class……………………..Teacher……………………..
Time : 10 minutes only marks 10 marks
1) State the general formula for alkanes …………………………………………..
2) Name the following alkanes
a) b)
H H H H H H H H H H
H C C C
C C C H H C C CC C C H
H
H H H H H H H H
H
H C C H
H H
c) d)
H H H H H H H H
H C C C
C H H C C C
C C C H
H
H H H H H H
H C H
H

2. H H H
e) f)
H C C CC H
H
H
H C H
H C H
C H
H
H
3) Refer to structures no. 2 above , which two structures are of are isomers to each other ?
Answer: structure .....................and structure ...................
4) Refer ONLY to structure 2 a) above ,
a) write the condensed structural formula ……………………………………….
b) Write molecular formula …………………………………………………………. END
ANSWERS
1) CnH2n +2
2) a) n-pentane b) 3-methylhexane c) propane d) 2-methylpentane
e) n-hexane f) 2,2 - dimethylpropane
3) a) and f ) OR d) and e)
4) a) CH3CH2CH2CH2CH3 b) C5H12