Water Treatment (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
How many litres of water does each person use daily in Ireland?
How many litres of water does each person use daily in Ireland?
300 litres
What type of process is screening in water treatment?
What type of process is screening in water treatment?
Physical filtration process
What is the most commonly used flocculating agent?
What is the most commonly used flocculating agent?
Aluminium sulfate
What percentage of suspended particles does sedimentation remove?
What percentage of suspended particles does sedimentation remove?
Over 90%
What is the pore size range in microfiltration membranes?
What is the pore size range in microfiltration membranes?
0.1-10 micrometres
What is the active disinfectant formed during chlorination?
What is the active disinfectant formed during chlorination?
Hypochlorous acid
What is the typical chlorine concentration added during chlorination?
What is the typical chlorine concentration added during chlorination?
0.5 ppm
What concentration of fluorine compounds is added by law in Ireland?
What concentration of fluorine compounds is added by law in Ireland?
About 1 ppm
What condition results from excess fluoride in water?
What condition results from excess fluoride in water?
Fluorosis
What is the optimum pH for drinking water distribution?
What is the optimum pH for drinking water distribution?
pH 7.2
Which chemical is added to raise pH if water is too acidic?
Which chemical is added to raise pH if water is too acidic?
Calcium hydroxide
What energy source do modern water treatment plants use?
What energy source do modern water treatment plants use?
Renewable energy