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Worksheetswater technology1
Total questions: 15
Worksheet time: 7mins
Name
Class
Date
1.
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
2.
Soft water is water that;
a)
Does not lather
b)
Lathers with difficulty
c)
Lathers easily
d)
Does not form bubbles
3.
Water that runs over limestone rock forms.....
a)
temporarily permanently soft water
b)
Soft water
c)
Permanently hard water
d)
Temporary hard water
4.
Water that runs over gypsum rock forms.....
a)
temporarily permanently soft water
b)
Soft water
c)
Permanently hard water
d)
Temporary hard water
5.
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
6.
If water contains calcium and sulphate ions, it is described as....
a)
temporarily permanently soft water
b)
Soft water
c)
Permanently hard water
d)
Temporary hard water
7.
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
8.
Washing Soda is called..
a)
Sodium carbonate
b)
Sodium hydrogen carbonate
c)
Sodium chloride
d)
Washing powder
9.
The method that uses resin beads in a column
a)
Boiling
b)
Washing soda
c)
Ion Exchange
d)
Washing powder
10.
Swimming for a long time in salt water makes the skin of ones fingertips wrinkled. Which one of the following properties is responsible for this observation?
a)
Osmosis
b)
Dialysis
c)
Electrodialysis
d)
Coagulation
11.
The process of removing extra common salt from water is called:
a)
Ionization
b)
Softening
c)
Disinfections
d)
Desalination
12.
A process that removes salt from the ocean water.
a)
desalination
b)
hydroelectricity
c)
irrigation
d)
fossil water
13.
What word describes the process of water moving through a semi permeable membrane, from a low concentration to a high concentration.
a)
Ooosnosis
b)
Reverse Osmosis
c)
Permeation
d)
Osmosis
14.
What word describes the process of water moving through a semi permeable membrane, from a high concentration to a low concentration.
a)
Ooosnosis
b)
Reverse Osmosis
c)
Permeation
d)
Osmosis
15.
What does reverse osmosis need to work?
a)
high pressure
b)
low pressure
c)
high temperature
d)
low temperature
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