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Chemistry 10th Class English Medium Online Test MCQs With Answers
Question # 1
pH value normally varies from.
Choose an answer
0-14
1-14
7-14
10-14
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Question # 2
Ozone is beneficial for us as it absorbs.....................
Choose an answer
Infrared Radiations
Ultraviolet radiations
Chlorofluorocarbons
Air pollutants
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Question # 3
Organic compounds contain:
Choose an answer
ionic bond
Covalent bond
Metallic bond
Co-ordinate covalent
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Question # 4
soap is the sodium salt of long chain.
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Amino acids
Fatty acids
Nucleotides
None of them
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Question # 5
Petroleum fraction having composition C
7
to C
10
IS called
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Petroleum gas
Petroleum Ether
Kerosine oil
Gasoline or petrol
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Question # 6
Permanent hardness is removed by adding.
Choose an answer
Na
2
zeolite.
Soda lime
Lime water
Quick lime
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Question # 7
The number of carbon atoms present in petroleum ether.
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1-5
2-5
3-7
5-7
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Question # 8
The color of Fe(OH)
2
ppt is.
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White
Brown
Muddy green
Blue
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Question # 9
If an organic compound has 4 carbon atoms, all singly bonded, it will have the following characteristics except one.
Choose an answer
It will be saturated hydrocarbon
It will hav 8 hydrogen atoms
Its name will be n-butane.
It will be least reactive.
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Question # 10
Which one of the following is a synthetic fiber:
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cotton
wool
nylon
silk
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Question # 11
Dichloromethane reacts with halogens in the presence of diffused sun light and produces
Choose an answer
Carbon tetrachloride
Chloroform
Chloromethane
No reaction
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Question # 12
The substance formed during the chemical reaction are called.
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Products
Reactants
Radical
Element
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Question # 13
How many % age of nitrogen present in air by volume?
Choose an answer
70%
75%
78%
80%
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