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Online Tests
Chemistry 10th Class English Medium Unit 15 Online Test MCQs With Answers
Question # 1
Which of the following gas is used to destroy harmful bacteria in water.
Choose an answer
Iodine
Chlorine
fluorine
Bromine
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Question # 2
Chemical formula of hypochlorous acid is.
Choose an answer
HCl
HOCl
H
2
CO
3
HF
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Question # 3
Hookworm is a parasite that infects the:
Choose an answer
large intestine
small intestine
stomach
liver
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Question # 4
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 # 5
Which one of the following properties of water is responsible for rising of water in plants?
Choose an answer
Specific heat capacity
Viscosity
Excellent solvent action
Capillary action
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Question # 6
Sea water in unfit for drinking purpose die to the presence of.
Choose an answer
Salts
Algae
Fishes
All of them
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Question # 7
Swimming pools are cleaned by a process:
Choose an answer
Hydrogenation
Bromination
Chlorination
Nitration
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Question # 8
Example of pest is
Choose an answer
Weeds
Herbs
Insect
All of them
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Question # 9
Which element do not causes toxicity in water?
Choose an answer
Lead
Arsenic
Sodium
Mercury
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Question # 10
Which disease cause when humans use water of industrial effluents.
Choose an answer
Cancer
Asthma
Jaundice
cholera
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Question # 11
The percentage of potable water on earth is.
Choose an answer
2%
0.2%
0.02%
0.002%
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Question # 12
Water molecule had a structure;
Choose an answer
non-polar
polar
ionic
tetrahedral
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Question # 13
Which disease causes bone and tooth damage?
Choose an answer
Fluorosis
Hepatits
Cholera
Jaundice
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