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Online Tests
Chemistry 10th Class English Medium Online Test MCQs With Answers
Question # 1
When CO
2
is passed through the ammonical brine the only salt that precipitates is:
Choose an answer
NaHCO
3
NH
4
HCO
3
Na
2
CO
3
(NH
4
)
2
CO
3
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Question # 2
When NaHCO
3
is heated if forms:
Choose an answer
CO
2
Ca(OH)
2
CaCO
3
CaO
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Question # 3
Which one of the diseases causes severe diarrhea and can be fatal?
Choose an answer
Jaundice
Dysentery
Cholera
Typhoid
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Question # 4
The plant use
Choose an answer
Carbon di oxide
Oxygen
Nitrogen
Sulphur
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Question # 5
Hard water can cause.
Choose an answer
Stomach disorder
Boiler blasts
Inefficiency of engine
All of them
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Question # 6
Acid used for cleaning metals , tanning and in printing industries, is:
Choose an answer
H2SO4
HNO3
CH3COOH
HCI
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Question # 7
Which gas is used to prepare ammonia?
Choose an answer
N
2
O
2
Cl
2
S
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Question # 8
The most important disaccharide is .
Choose an answer
Sucrose
Glucose
Cellulose
None of them
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Question # 9
Which one of the following is not a fossil fuel?
Choose an answer
Coal
Natural gas
Bio gas
Petroleum
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Question # 10
Which gas like a glass wall of g green house:
Choose an answer
CO
O2
CO2
N2
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Question # 11
In the troposphere (lowest layer), the temperature decreases form 17°C to;
Choose an answer
-58°C
-93°C
-61°C
-49°C
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Question # 12
Temporary hardness is because of.
Choose an answer
Ca(HCO
3
)
2
CaCO
3
MgCO
3
MgSO
4
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Question # 13
Pitch is black residue of.
Choose an answer
Coke
Coal tar
Coal
Coal gas
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