Question 1
Which process uses plants to absorb metal compounds from soil?
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Phytomining
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Bioleaching
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Electrolysis
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Smelting
Question 2
Which process uses bacteria to produce a leachate containing metal compounds?
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Bioleaching
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Phytomining
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Cracking
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Distillation
Question 3
Which stage comes first in a life cycle assessment?
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Extraction
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Manufacture
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Use
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Disposal
Question 4
What does it mean to call water potable?
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It is safe to drink
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It contains no dissolved solids
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It is chemically pure water
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It is used only in industry
Question 5
Which process removes dissolved salts from sea water?
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Desalination
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Filtration
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Sedimentation
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Chlorination
Question 6
Why is drinking water sterilised?
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To kill microbes
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To remove salts
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To improve taste
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To remove sand
Question 7
Which substance is commonly used to sterilise drinking water?
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Chlorine
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Sodium chloride
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Calcium carbonate
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Nitrogen
Question 8
Which of these is a finite resource?
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Crude oil
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Timber
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Cotton wool
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Sheep’s wool
Question 9
What does sustainable development aim to protect?
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The needs of future generations
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Present-day profits
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Industrial output
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Population growth
Question 10
Which of these is a renewable resource?
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Timber
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Coal
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Natural gas
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Metal ore
Question 11
What is removed at the first stage of waste water treatment?
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Large solids
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Dissolved salts
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Harmful microbes
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Dissolved oxygen
Question 12
What does sedimentation do in sewage treatment?
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It settles solids out as sludge
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It boils the water away
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It crystallises dissolved salts
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It kills the harmful microbes
Question 13
Which bacteria digest the sludge from sewage treatment?
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Anaerobic bacteria
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Aerobic bacteria
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Photosynthetic bacteria
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Nitrifying bacteria
Question 14
Recycling metals reduces the need for which process?
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Mining ore
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Electrolysis
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Filtration
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Distillation
Question 15
Which action is reusing a glass bottle rather than recycling it?
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Refilling it
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Melting it down
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Crushing it for cullet
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Burning it for energy
Question 16
What is an alloy?
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A mixture containing a metal
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A compound of two metals
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A very pure single metal
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A metal joined to its oxide
Question 17
Which alloy is made from copper and zinc?
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Brass
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Bronze
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Steel
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Solder
Question 18
Which of these materials is a ceramic?
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Porcelain
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Poly(ethene)
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Brass
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Carbon fibre
Question 19
What is a composite made from?
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Fibres held in a matrix
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One pure element only
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Two metals mixed together
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A single polymer chain
Question 20
Which two substances must be present for iron to rust?
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Oxygen and water
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Oxygen and carbon dioxide
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Water and nitrogen
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Carbon dioxide and salt
Question 21
What happens during sacrificial protection?
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A more reactive metal corrodes
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A less reactive metal corrodes
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A layer of paint is applied
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The iron is heated strongly
Question 22
Which method prevents corrosion by forming a physical barrier?
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Painting
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Attaching a magnesium block
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Using a zinc sacrificial anode
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Alloying the iron with carbon
Question 23
Which three elements do NPK fertilisers supply?
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Nitrogen, phosphorus, potassium
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Nitrogen, phosphorus, platinum
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Nickel, phosphorus, potassium
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Nitrogen, potassium, palladium
Question 24
Which acid reacts with ammonia to make ammonium nitrate?
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Nitric acid
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Sulfuric acid
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Hydrochloric acid
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Phosphoric acid
Question 25
Which two gases are the raw materials for the Haber process?
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Nitrogen and hydrogen
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Nitrogen and oxygen
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Ammonia and hydrogen
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Hydrogen and oxygen
Question 26
Which catalyst is used in the Haber process?
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Iron
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Platinum
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Nickel
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Vanadium oxide
Question 27
What temperature is used in the Haber process?
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450 °C
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45 °C
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1500 °C
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4500 °C