Lesson 4.10.1.2
4.10.1.2 Potable water Quiz: AQA Chemistry, Unit 10
20 questions
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Lesson 4.10.1.2, Potable water: 20 multiple choice questions for the AQA GCSE Chemistry (8462), Unit 10: Using resources, written with Revision Ninja.
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The 20 questions
-
What is the scientific term for water that is safe to drink?
- Distilled water
- Potable water
- Pure water
- Groundwater
-
Why is drinking water not chemically pure?
- Contains dissolved substances
- Is boiling hot
- Contains harmful bacteria
- Is too acidic
-
What is the final key step in treating UK fresh water?
- Desalination
- Sterilising
- Chlorination only
- Distillation
-
Which agent is commonly used to sterilise drinking water?
- Chlorine
- Sodium chloride
- Ammonia
- Copper sulfate
-
Which process can desalinate salty water using membranes?
- Reverse osmosis
- Crystallisation
- Neutralisation
- Filtration
-
What do desalination processes require in large amounts?
- Oxygen
- Carbon
- Energy
- Nitrogen
-
Which water source requires desalination to become potable?
- Sea water
- River water
- Rain water
- Ground water
-
What is the primary purpose of sterilising drinking water?
- Filter out grit
- Kill harmful microbes
- Lower the pH
- Remove dissolved salts
-
Which substance is present in potable water but absent in chemically pure water?
- Toxic metals
- Dissolved substances
- Harmful microbes
- Suspended solids
-
Which type of water requires desalination before treatment?
- Rain water
- Salty water
- Ground water
- Fresh water
-
Potable water must have sufficiently low levels of microbes and what else?
- Suspended dust
- Dissolved salts
- Insoluble grit
- Organic matter
-
Which property of a water sample is commonly analysed in required practical 8?
- Density
- pH
- Viscosity
- Mass
-
Which process removes dissolved solids from salty water?
- Screening
- Filtration
- Distillation
- Sedimentation
-
What is the correct sequence of steps for treating fresh lake water?
- Sterilise, filter, source
- Source, filter, sterilise
- Filter, source, sterilise
- Source, sterilise, filter
-
Why is desalination avoided in the UK when fresh water is available?
- Toxic byproducts
- Slow production rate
- Low water purity
- High energy cost
-
In the UK, what is the main source of fresh water?
- Glacial ice
- Desalinated oceans
- Rain
- Deep aquifers
-
Which sterilising agent is a form of radiation?
- Ozone
- Ultraviolet light
- Sand
- Chlorine
-
Why is an appropriate source of fresh water chosen first?
- Faster flow rate
- Warmer temperature
- Fewer dissolved substances
- Higher mineral content
-
Which technology is commonly used during desalination?
- Filter beds
- Carbon filters
- Magnetic traps
- Membranes
-
What hazard do microbes in untreated drinking water pose to humans?
- Raise pH levels
- Increase salinity
- Cause illness
- Discolour water
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