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WorksheetsAnalysis of Hard Water & Treatment
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
"Turbidity" is the measure of a body of water's ____________________________.
a)
cloudiness
b)
eutrophication
c)
temperature change
d)
flocculation
2.
The ions that cause hard water are;
a)
Calcium and Manganese ions
b)
Calcium and Magnesium ions
c)
Carbon and Magnesium ions
d)
Carbon and Manganese ions
3.
Soft water is water that;
a)
Does not lather
b)
Lathers with difficulty
c)
Lathers easily
d)
Does not form bubbles
4.
If water contains calcium and hydrogen carbonate ions, it is described as....
a)
temporarily permanently soft water
b)
Soft water
c)
Permanently hard water
d)
Temporary hard water
5.
Boiling can be used to make which type (s) of water soft.
a)
Temporary and permanent hard water
b)
Soft water
c)
Permanently hard water
d)
Temporary hard water
6.
The method that uses resin beads in a column
a)
Boiling
b)
Washing soda
c)
Ion Exchange
d)
Washing powder
7.
Which of the following does not cause the permanent hardness in water?
a)
Nitrates
b)
Sulphates
c)
Chlorides
d)
Bicarbonates
8.
Ion-exchange resin is ____________
a)
Linear
b)
Low molecular weight
c)
Organic polymer with porous structure
d)
Soluble
9.
In _____________ when the water is heated then the soluble salts turns into insoluble ones and removed by filtration.
a)
Temporary hardness
b)
Permanent hardness
c)
Non-carbonate
d)
Non-alkaline
10.
The chemical formula of zeolite is ___________
a)
FeSO4.7H2O
b)
Na2Al2O
c)
Al2(SO4)3.18 H2O
d)
Na2O.Al2O3.xSiO2.yH2O
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