1.  The general formula for alkenes is...

C_nH_n
C_nH_2n-2
C_nH_2n

2.  The empirical formula of cyclohexene is ...

CH
CH₂
C₃H₅

3.   Which of the following straight chain alkenes has the highest boiling point?

C₂H₄
C₃H₆
C₄H₈

4.  What is the name of the compound with the structural formula, CH₃CH(CH₃)CH=CH₂?

pent-1-ene
2-methylbutane
2-methylbut-3-ene

5.  The number of structural isomers of alkenes with the molecular formula C₄H₈ is...

2

6.  The bond angles in ethene are...

all 120°
all 109.5°
all 90°

7.  Which one of the following is not a planar molecule?

chloroethene
ethene
propene

8.  Which one of the following statements about alkenes is not true?

they are unsaturated hydrocarbons
they undergo addition reactions
they can be attacked by electrophiles

9.  Which one of the following statements about cis and trans isomers is not true?

they are geometrical isomers
their atoms occupy similar positions in space
they have different melting points

10.  Which one of the following is statements about geometrical isomerism is not true?

it occurs in pent-1-ene
it is a form of stereoisomerism
 it occurs in pent-2-ene

11.  Which one of the following isomers of molecular formula C₄H₈ can exist in two forms?

but-1-ene
but-2-ene
2-methylpropene

12.  Which of the following products is/are formed when HBr reacts with pent-2-ene?

CH₃CHBrCH₂CH₂CH₃   and  CH₂BrCH₂CH₂CH₂CH₃
CH₃CHBrCH₂CH₂CH₃   only
CH₃CHBrCH₂CH₂CH₃   and  CH₃CH₂CHBrCH₂CH₃

13.  Which one of the following statements about the reaction between HBr and propene is not true?

it proceeds via an electrophilic addition mechanism
the intermediate organic species contains a carbocation
only 1-bromopropane is produced

14.  The compound formed when bromine reacts with but-1-ene is...

1-bromobutane
2-bromobutane
1,3-dibromobutane

15.  Which of the following statements about the hydrogenation of alkenes is not true?

the reaction involves reduction of an alkene
the reaction can be catalysed by nickel
the reaction involves substitution

16.  Which of the following statements about the reaction between steam and ethene is not true?

it is a low temperature process
it uses a phosphoric acid catalyst
it produces ethanol

17.  Which one of the following compounds cannot undergo addition polymerisation?

CF₂=CF₂
CH₃CH₂Cl
phenylethene

18.  The repeating unit in a poly(propene) molecule is..

-[CH₂ - CH₂]-
-[CH₂ - CH(CH₃)]-
-[CH = C(CH₃)]-

19.  Which of the following statements about poly(propene) is not true?

it is an addition polymer
it reacts readily with acids
it is used to make ropes and crates

20.  Which of the following statements about addition polymerisation is not true?

monomers are converted into polymers
some atoms in the monomers are not used in the polymer
saturated hydrocarbons don’t undergo addition polymerisation