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10th Class Chemistry Chapter 15 Water English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Which compound protect teeth from diseases?
Choose an answer
Fluorine compound
Chlorine compound
Iodine compound
Bromine compound
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Question # 2
The density of water is ................. at 4
o
C
Choose an answer
1 gcm
-1
2 gcm
-1
3 gcm
-1
4 gcm
-1
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Question # 3
Rapid growth of algae in water bodies is because of detergent having.
Choose an answer
Carbonate salts.
Sulphonic acid salts.
Sulphate salts.
Phosphate salts.
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Question # 4
Vibrious cholera bacteria causes the disease
Choose an answer
Cholera
Diarrhea
Jaundice
Hepatitis
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Question # 5
Which one of the following salts makes the water permanently hard?
Choose an answer
NaCO
3
NaHCO
3
CA(HCO
3
)
2
CaSO
4
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Question # 6
Calcium carbonate is in water.
Choose an answer
Insoluble
Sparingly
None of them
Soluble
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Question # 7
The percentage of water in human body is.
Choose an answer
40%
50%
60%
70%
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Question # 8
Chemical form of gypsum.
Choose an answer
MgSO
4
. 5H
2
O
CaSO
4
. 2H
2
O
FeSO
4
. 5H
2
O
CuSO
4
. 5H
2
O
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Question # 9
Which disease is caused by polluted water.
Choose an answer
Cholera
Typhoid
Diarrhea
All of them
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Question # 10
Salt makes the water permanently hard.
Choose an answer
CaSO
4
Ca(HCO
3
)
2
NaHCO
3
NaCO
3
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Question # 11
Which gas is used to destroy harmful bacteria in water?
Choose an answer
Iodine
Chlorine
Flourine
Bromine
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Question # 12
Which is not a heavy metal.
Choose an answer
Cadmium
Lead
Zinc
Murcury
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