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Online Tests
Chemistry 10th Class English Medium Unit 15 Online Test MCQs With Answers
Question # 1
The salts of which element are present in detergent that causes the rapid growth of algae in water bodies is.
Choose an answer
Phosphate
Calcium
Sodium
All of them
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Question # 2
Some organic compound are soluble in water due to the presence of .
Choose an answer
-OH
H
+
Botha a and b
Covalent bond
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Question # 3
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 # 4
The depletion of which gas results in the death of aquatic life.
Choose an answer
Oxygen
Carbon di oxide
Boath of them
Nome of them
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Question # 5
Swimming pools are cleaned by a process:
Choose an answer
Hydrogenation
Bromination
Chlorination
Nitration
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Question # 6
One H
2
O molecule can form hydrogen bonding with how many other H
2
O molecules?
Choose an answer
One
Two
Three
Four
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Question # 7
Gypsum in water is.
Choose an answer
Sparingly soluble
Insoluble
Highly soluble
None of them
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Question # 8
Which salt cause permanent hardness in water is:
Choose an answer
Ca(HCO
3
)
2
Mg(HCO
3
)
2
CaCl
2
KCl
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Question # 9
Water has a maximum density at 4
o
C
Choose an answer
12 cm
-3
2 g cm
-3
1 g cm
-3
4 gcm
-3
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Question # 10
Which is not a heavy metal.
Choose an answer
Cadmium
Lead
Zinc
Murcury
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Question # 11
Water molecule had a structure;
Choose an answer
non-polar
polar
ionic
tetrahedral
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Question # 12
Calcium carbonate is in water.
Choose an answer
Insoluble
Sparingly
None of them
Soluble
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Question # 13
The percentage of water in human body is.
Choose an answer
40%
50%
60%
70%
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Question # 14
Permanent hardness can be removed by using .
Choose an answer
Soda lime
Sodium Zeolite
Quick lime
Lime water
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Question # 15
Which disease causes bone and tooth damage?
Choose an answer
Fluorosis
Hepatits
Cholera
Jaundice
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Question # 16
Water dissolves non-ionic compound by
Choose an answer
Ion-ion forces
Ion-dipole forces
Dipole -dipole forces
Hydrogen bonding.
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Question # 17
Cholera is caused by
Choose an answer
Protozoa
Virus
Bacteria
Fungi
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