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WorksheetsAlkenes and Alcohols
Total questions: 25
Worksheet time: 2hrs 5mins
How many structural isomers with the molecular formula C5H10O react with Tollens’ reagent?
3
4
5
6
Which of the following compounds would form an orange-red precipitate when heated with Fehling’s solution?
CH3CH2CN
CH3CH2COOH
CH3CHO
CH3COCH3
The structure of the molecule of methyl 2-methylpropenoate is shown below. Which one of the following statements concerning this compound is not true?
It displays geometrical isomerism.
It forms an addition polymer.
It undergoes reduction.
It decolourises bromine.
Which one of the following does not contain any delocalised electrons?
poly(propene)
benzene
graphite
sodium
The correct systematic name for the structure shown is ...
2,3-diethylbut-2-ene
2-ethyl-3-methylpent-2-ene
4-ethyl-3-methylpent-3-ene
3,4-dimethylhex-3-ene
The correct name for the alkene monomer which forms the polymer shown is ...
2-methyl-3-ethylpropene
2-methylpent-2-ene
2-methylpent-3-ene
4-methylpent-2-ene
What is the major product of the reaction between but-1-ene and DBr? (D is deuterium and represents 2H)
CH2DCH2CH2CH2Br
CH2DCH2CHBrCH3
CH3CH2CHBrCH2D
CH3CH2CHDCH2Br
Which statement about ethene is correct?
It has no geometric isomers because there is free rotation around the C=C bond.
It reacts with HBr in a nucleophilic addition reaction.
It burns in excess oxygen to produce carbon dioxide and water.
The C=C bond is twice as strong as the C–C bond in ethane.
Consider the reaction between propene and hydrogen bromide to form the major product. Which species is formed in the mechanism of this reaction?
CH3–C+H–CH2Br
CH3–CHBr–C+H2
CH3–C+H–CH3
CH3–CH2–C+H2
Z-Retinal, shown in the diagram, is a component in vitamin A. Which of the double bonds, labelled A, B, C or D, is responsible for the letter Z in the name?
A
B
C
D
What is the empirical formula of 4-hydroxypent-2-ene?
C5H12O
C5H10O
CH2O
C5H9OH
This structure shows a section of a polymer chain formed from the random polymerisation of two different monomers. Which pair of monomers could produce this polymer?
CH2=CHF and CH2=CHCF3
CH2=CH2 and CHF=CHCF3
CH2=CH2 and CH2=CHCF3
CH2=CHF and CHCF3=CHF
Which statement is correct about poly(chloroethene)?
It has the empirical formula CHCl
It decolourises bromine water.
Its brittleness is reduced by plasticisers.
Its polymer chain contains alternate single and double bonds.
Which one of the following does not represent an oxidation?
propene → propane
propan-l-ol → propanal
propan-l-ol → propanoic acid
propanal → propanoic acid
CH2O is the empirical formula of
methanol
methyl methanoate
ethane-1,2-diol
butanal
Which one of the following cannot be produced by oxidation of propan-l-ol?
carbon dioxide
propanone
propanal
propanoic acid
Which one of the following is not a suitable method for the preparation of ethanol?
oxidation of ethane
hydration of ethene
reduction of ethane
hydrolysis of bromoethane
Which one of the following isomers is not oxidised under mild reaction conditions?
(CH3)2CHCH(OH)COCH3
(CH3)2C(OH)CH2COCH3
(CH3)2CHCH(OH)CH2CHO
(CH3)2C(OH)CH2CH2CHO
Which alcohol can be oxidised by acidified potassium dichromate(VI) but cannot be dehydrated by heating with concentrated sulfuric acid?
2,3-dimethylbutan-2-ol
2,2-dimethylpropan-1-ol
2-methylpropan-2-ol
pentan-3-ol
Which one of the following alcohols forms a mixture of alkenes when dehydrated?
propan-1-ol
propan-2-ol
pentan-1-ol
pentan-2-ol
Which statement about ethanal is correct?
It reacts with Tollens’ reagent to form silver.
It has a higher boiling point than ethanol.
Its empirical and molecular formulas are different.
It belongs to a homologous series with general formula CnH2n+1O
Certain chemical tests were performed on the pain-relief drug ibuprofen. The results of these tests are given in the table below. Which one of the following functional groups do these results suggest that ibuprofen contains?
Propene can be made by the dehydration of propan-2-ol.
What is the percentage yield when 30 g of propene (Mr = 42.0) are formed from 50 g
of propan-2-ol (Mr = 60.0)?
60%
67%
81%
86%
Which one of the following is not a correct statement about vitamin C, shown below?
It is a cyclic ester.
It can form a carboxylic acid on oxidation.
It decolourises a solution of bromine in water.
It is a planar molecule.
For this question refer to the reaction scheme below. Which one of the following statements is not correct?
Reaction of W with sodium cyanide followed by hydrolysis of the resulting product gives propanoic acid.
Mild oxidation of Z produces a compound that reacts with Tollens’ reagent, forming a silver mirror.
Z reacts with ethanoic acid to produce the ester propyl ethanoate.
W undergoes addition polymerisation to form poly(propene).
