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Online Tests
Chemistry 10th Class English Medium Unit 15 Online Test MCQs With Answers
Question # 1
Temporary hardness is because of.
Choose an answer
Ca(HCO
3
)
2
CaCO
3
MgCO
3
MgSO
4
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Question # 2
Vibrious cholera bacteria causes the disease
Choose an answer
Cholera
Diarrhea
Jaundice
Hepatitis
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Question # 3
Mercury poisoning cause:
Choose an answer
neurological damage
high blood pressure
kidney damage
gastro
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Question # 4
Which element protects teeth from decay?
Choose an answer
Potassium
Fluorine
Sodium
Calcium
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Question # 5
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 # 6
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 # 7
The percentage of ocean in world water is.
Choose an answer
50%
67%
97%
25%
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Question # 8
Freezing point of water is:
Choose an answer
-4°C
0°C
-36°C
-58°C
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Question # 9
Temporary hardness is because of .
Choose an answer
Ca(HCO
3
)
2
CaCO
3
MgCO
3
MgSO
4
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Next
Question # 10
Which process is responsible for ascending of water in roots:
Choose an answer
evaporation
transpiration
condensation
capillary action
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Question # 11
Cause of diarrhoea among following is:
Choose an answer
Diarrhea
Cholera
Cryptosporidium
Typhoid
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Question # 12
The lives of aquatic plants and animals are indirectly related to concentration of dissolved gas in water.
Choose an answer
Nitrogen
Hydrogen
Oxygen
Carbon
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Question # 13
Sodium zeolite is resin of:
Choose an answer
NaAl(SiO
3
)
2
KAl(SiO
3
)
2
LiAl(SiO
3
)
2
RbAl(SiO
3
)
2
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