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Online Tests
Chemistry 10th Class English Medium Online Test MCQs With Answers
Question # 1
Olefins is a Latin word meaning:
Choose an answer
inert
less reactive
oil forming
most reactive
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Question # 2
DNA was discovered by
Choose an answer
J .Watson
Funk
Robert brown
Hopkins
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Question # 3
Cause of diarrhoea among following is:
Choose an answer
Diarrhea
Cholera
Cryptosporidium
Typhoid
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Question # 4
The percentage by volume of nitrogen in dry gas is.
Choose an answer
78.09%
20.94%
0.93%
0.03%
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Question # 5
The lives of aquatic plants and animals are indirectly related to concentration of dissolved ------ in water:
Choose an answer
hydrogen
oxygen
chlorine
nitrogen
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Question # 6
Calcium carbonate is in water.
Choose an answer
Insoluble
Sparingly
None of them
Soluble
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Question # 7
The two major components of atmosphere are:
Choose an answer
Hydrogen and oxygen
Nitrogen and Hydrogen
Nitrogen and oxygen
Oxygen and water.
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Question # 8
The pH of water containing CO
2
is
Choose an answer
4-6
5.6-6
6-7
7-8
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Question # 9
Main component of natural gas is
Choose an answer
Methane
propane
Butane
Propene
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Question # 10
The source of galactose.
Choose an answer
Fruits
Vegetables
Cereals
All of them
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Question # 11
Which hydrocarbon molecule would have no effect on the aqueous solution of bromine?
Choose an answer
CH
4
C
10
H
20
C
2
H
4
C
2
H
2
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Question # 12
Which acid is used for etching designs on copper plates?
Choose an answer
H
2
SO
4
HNO
3
HCl
CH
3
COOH
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Question # 13
Which one of the following is not an air pollutants?
Choose an answer
Nitrogen
Carbon dioxide
Nitrogen oxide
Ozone
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