Water and its Treatment
Authored by B. Safala
Chemistry
University
Used 154+ times
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24 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Complete the following sentence "Hard water is water that
forms a lather easily with water.
does not form a lather easily with water
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which of the following compounds are responsible for causing temporary hardness in water?
CaCl2
Ca(HCO3)2
CaSO4
Mg(HCO3)2
3.
FILL IN THE BLANKS QUESTION
30 sec • 1 pt
_________ hardness can be removed by boiling while __________ hardness cannot by removed by boiling.
(a)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hardness of Water always has to be expressed in terms of
CaSO4 equivalents
CaCl2 Equivalent
CaCO3 equivalents
All of the above
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
-----------is the pH required in the determination of Hardness of water by EDTA method
4 to 6
9 to 14
8 to 10
1 to 4
6.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
1 ppm is eual to ------------ 0Clark
(a)
7.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
One 0 French is equal to ----------ppm
(a)
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