G3 Science (Chemistry) Organic Chemistry · question set

Try K326/K328 Organic Chemistry exam-style questions. Covers fuels, prescribed C1–C3 alkanes, alkenes and alcohols, ethanoic acid formation, addition polymerisation and plastics evaluation. Esters, C4 isomers and condensation polymers are excluded.

SEC G3 Combined Science Chemistry component 2027

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What is crude oil?

A compound with one fixed boiling point
A mixture of hydrocarbons
A single long-chain alkane
An aqueous solution of carbon

Fractional distillation separates crude oil mainly because different hydrocarbons have different:

Densities
Boiling points
Colours
Solubilities in water

What condition is needed for alkanes to react with chlorine in a substitution reaction?

Sunlight/UV light
Aqueous solution
High pressure only
Catalyst $\ce{Fe}$

Which test distinguishes an alkene from an alkane under normal conditions?

Litmus paper
Bromine water
Flame test
Silver nitrate test

Hydrogenation of ethene produces:

Ethanol
Ethane
Ethanoic acid
Poly(ethene)

What is the repeating unit in poly(ethene)?

$\ce{-CH2-CH2-}$
$\ce{-CH2-CH2-O-}$
$\ce{-CH3-CH3-}$
$\ce{-CH2-CH=CH-}$

What is the functional group in alcohols?

$\ce{C=C}$
$\ce{-OH}$
$\ce{-COOH}$
$\ce{-COO-}$

In fermentation, glucose is converted into:

Ethanol and oxygen
Ethanol and carbon dioxide
Ethene and steam
Ethanoic acid and hydrogen

Which named oxidising reagent can convert ethanol to ethanoic acid?

Acidified potassium manganate(VII)
Aqueous sodium chloride
Bromine water
Aqueous silver nitrate

What functional group is found in carboxylic acids?

$\ce{-OH}$
$\ce{-COOH}$
$\ce{C=C}$
$\ce{-COO-}$

Addition polymerisation usually involves monomers that contain:

$\ce{C=C}$
$\ce{-COOH}$
$\ce{-OH}$
$\ce{-NH2}$

Which disposal method is most consistent with reducing landfill when plastics are suitable for reprocessing?

Landfill
Recycling
Dumping in the ocean
Leaving as litter

G3 Science (Chemistry) Organic Chemistry · question set

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