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Online Tests
Chemistry 10th Class English Medium Unit 15 Online Test MCQs With Answers
Question # 1
Which element do not causes toxicity in water?
Choose an answer
Lead
Arsenic
Sodium
Mercury
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Question # 2
Swimming pools are cleaned by the process.
Choose an answer
Chlorination
Hydrogenations
Saponification
None of them
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Question # 3
The heat capacity of water is greater than rocks.
Choose an answer
4 times
5 times
6 times
7 times
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Question # 4
Which disease is caused by polluted water.
Choose an answer
Cholera
Typhoid
Diarrhea
All of them
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Question # 5
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 # 6
Density of water at 4°C is:
Choose an answer
0.976 gem-3
1 gem-3
0.956 gem-3
1.1 gem-3
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Question # 7
The removal of Mg
+2
and Ca
+2
Ion which are responsible for the hardness of water is called.
Choose an answer
Temporary hardness
Permanent hardness
Water softening
Hydrogen bonding
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Question # 8
Temporary hardness is because of .
Choose an answer
Ca(HCO
3
)
2
CaCO
3
MgCO
3
MgSO
4
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Question # 9
Which one of the following diseases causes liver inflammation?
Choose an answer
Typhoid
Jaundice
Cholera
Hapatitis
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Question # 10
Which one of the following diseases severe diarrhea and can be fatal?
Choose an answer
Joundice
Cholera
Dysentery
Typhoid
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Question # 11
Swimming pools are cleaned by a process:
Choose an answer
Hydrogenation
Bromination
Chlorination
Nitration
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Question # 12
Specific heat capacity of water is.
Choose an answer
4.2 KJg
-1
K
-1
4.2 Jg
-1
K
-1
2.4 KJg
-1
K
-1
2.4 Jg
-1
K
-1
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Question # 13
Ionic compounds are soluble in water due to:
Choose an answer
Hydrogen bonding
ion-dipole forces
Dipole-dipole forces
Dipole -induced dipole forces
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