Lesson 3.3.12.2
3.3.12.2 Biodegradability and disposal of polymers Quiz: AQA Chemistry, Unit 3
20 questions
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Lesson 3.3.12.2, Biodegradability and disposal of polymers: 20 multiple choice questions for the AQA Chemistry (7405), Unit 3: Organic chemistry, written with Revision Ninja.
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The 20 questions
-
By which reaction process are polyesters and polyamides broken down in the environment?
- Hydrolysis
- Oxidation
- Hydration
- Reduction
-
What is a main environmental advantage of recycling polyalkene plastics?
- Reduces polymer purity
- Saves raw materials
- Increases landfill space
- Releases greenhouse gases
-
Why is disposing of polyalkene plastics in landfill sites problematic?
- Rapid hydrolysis
- High reactivity
- Water solubility
- Non-biodegradability
-
Which disposal method may release toxic gases such as hydrogen chloride from some polymers?
- Incineration
- Recycling
- Anaerobic digestion
- Composting
-
Which structural feature allows polyesters to undergo hydrolysis, unlike polyalkenes?
- Hydrogen bonds
- Polar ester links
- Non-polar C-C bonds
- Carbon-carbon double bonds
-
Which feature of polyalkene molecules makes them chemically inert and non-biodegradable?
- Non-polar C-C bonds
- Ionic bonds
- Hydrophilic groups
- Polar C=O bonds
-
Which dicarboxylic acid is produced by the complete hydrolysis of nylon 6,6?
- Hexanedioic acid
- Methanoic acid
- Ethanedioic acid
- Butanedioic acid
-
Which bond is broken during the hydrolysis of a polyamide?
- C–H bond
- N–H bond
- C–C bond
- C–N bond
-
What chemical reaction allows condensation polymers to biodegrade in the environment?
- Hydrolysis
- Reduction
- Addition
- Free radical substitution
-
Which disposal method breaks polyesters back down into raw monomers for reuse?
- Mechanical shredding
- Incineration
- Landfill disposal
- Chemical recycling
-
Which polymer would be expected to break down by hydrolysis in damp soil?
- Polystyrene
- Polyethene
- Polyester
- Polypropene
-
What product is recovered when polyesters are recycled via complete hydrolysis?
- Crude petroleum
- Original monomers
- Synthetic alkenes
- Short-chain alkanes
-
Why are polyalkenes resistant to biodegradation under environmental conditions?
- Non-polar C–C bonds
- Weak hydrogen bonds
- Hydrolysable ester links
- Polar C–O bonds
-
Which diol is produced by the complete hydrolysis of Terylene?
- Propane-1,3-diol
- Butane-1,4-diol
- Ethanol
- Ethane-1,2-diol
-
What major processing step makes recycling mixed plastic waste expensive and difficult?
- Cracking hydrocarbons
- Sorting the polymers
- High-temperature combustion
- Neutralising acidic gases
-
Which polymer disposal method converts waste plastics directly into usable heat or electricity?
- Landfill
- Mechanical recycling
- Feedstock recycling
- Incineration
-
What is a major advantage of incinerating non-biodegradable polymer waste?
- Monomer regeneration
- Zero carbon emissions
- Energy recovery
- Indefinite material reuse
-
Which type of polymer is non-biodegradable due to its inert hydrocarbon backbone?
- Polyesters
- Polyalkenes
- Proteins
- Polyamides
-
Which feature makes condensation polymers biodegradable compared to addition polymers?
- Polar hydrolysable links
- Branched carbon chains
- High molecular mass
- Non-polar C–C bonds
-
Which polymer produces only carbon dioxide and water upon complete combustion?
- Nylon 6,6
- Polyethene
- Poly(chloroethene)
- Kevlar
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