Question 1

Which bond angles are present in a molecule of methanol?

  A  

90° and 104.5°

  B  

104.5° and 109.5°

  C  

109.5° and 180°

  D  

90° and 180°

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Question 2

Which alcohol gives only one possible oxidation product when warmed with dilute acidified potassium dichromate(VI)?

  A  

butan-1-ol

  B  

butan-2-ol

  C  

2-methylpropan-1-ol

  D  

2-methylpropan-2-ol

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Question 3

In the first commonly used breathalyser, acidified potassium dichromate(VI) was used which was reduced to chromium(III) by alcohol.

The colour change seen when alcohol was present in a motorist’s breath is from

  A  

orange to green

  B  

orange to yellow

  C  

yellow to green

  D  

yellow to orange

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Question 4

Ethanol is soluble in water. The best explanation for this is

  A  

ethanol molecules form hydrogen bonds with water molecules

  B  

ethanol molecules form London (dispersion) forces with water molecules

  C  

ethanol molecules form permanent dipole interactions with water molecules

  D  

ethanol and water are miscible liquids

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Question 5

What is a disadvantage of using biofuels, compared to fossil fuels?

  A  

biofuels are more toxic

  B  

biofuels give off CO2 when they burn

  C  

biofuels give off SO2 when they burn

  D  

the land used to grow biofuels could be used for crops

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Question 6

What happens when the compound shown is distilled with acidified potassium dichromate(VI)?

  A  

no new product is formed

  B  

an aldehyde is formed

  C  

a ketone is formed

  D  

a carboxylic acid is formed

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Question 7

A student says that bio-ethanol is carbon neutral.

Which option provides evidence that disagrees with the student’s statement about bio-ethanol?

  A  

it gives off carbon dioxide when it burns

  B  

it is made from crops that absorb carbon dioxide

  C  

energy from conventional power-stations is used to make it

  D  

valuable land is used up growing the crops used to make bio-ethanol

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Question 8

What is not a reaction of 2-methylpropan-2-ol?

  A  

reaction with an acid anhydride to form an ester

  B  

oxidation to a ketone

  C  

dehydration to an alkene

  D  

reaction with HCl to form a halogenoalkane

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Question 9

Which alcohol reacts with an acid catalyst to form E and Z stereoisomers?

  A  

pentan-3-ol

  B  

pentan-1-ol

  C  

2-methylbutan-2-ol

  D  

2,2-dimethylpropan-1-ol

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Question 10

Which alcohol will not react with potassium dichromate(VI) in sulfuric acid?

  A  

CH3CH2CH(OH)CH2CH3

  B  

CH3CH2CH(CH3)CH2OH

  C  

(CH3)2CHCH(CH3)OH

  D  

(CH3CH2)2C(CH3)OH

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Question 11

Which compound can be oxidised to form (CH3)2CHCOCH3?

  A  

2-methylpropan-1-ol 

  B  

2,2-dimethylpropanol

  C  

2-methylbutan-2-ol

  D  

3-methylbutan-2-ol

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Question 12

Which alcohol forms a mixture of alkenes when dehydrated?

  A  

propan-1-ol

  B  

propan-2-ol

  C  

pentan-1-ol

  D  

pentan-2-ol

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Question 13

Which statement is correct about the production and use of ethanol as a biofuel?


  A  

biofuel ethanol is produced by the fermentation of glucose in the presence of yeast and air

  B  

biofuel ethanol is purified by fractional distillation

  C  

no carbon dioxide is released when biofuel ethanol is burned

  D  

biofuel ethanol burns with a cleaner flame than ethanol made by hydration of ethene

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Question 14

Which compound reacts to form a ketone when warmed with an acidified solution of potassium dichromate(VI)?

  A  

CH3CH2CH2OH


  B  

(CH3)2CHOH

  C  

CH3CH2CHO

  D  

(CH3)2CHCOOH


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Question 15

In the UK industrial ethanol is now produced by the direct hydration of ethene. This process has largely replaced the fermentation method.

Which is a likely reason for this change of method?

  A  

the direct hydration route produces purer ethanol

  B  

the direct hydration route employs milder conditions

  C  

the direct hydration route doesn't use a catalyst

  D  

the direct hydration route produces ethanol by a slower reaction

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