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Online Tests
Chemistry 9th Class English Medium Unit 1 Online Test MCQs With Answers
Question # 1
Free radical is a
Choose an answer
Extremely stable
Extremely reactive
Extremely inert
All of these
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Question # 2
Which one of the following element is found in most abundance in the earth's crust?
Choose an answer
Oxygen
Aluminum
Silicon
Iron
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Question # 3
_____________ revolves in orbits around nucleus.
Choose an answer
Electron
Proton
Neutrons
Nil
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Question # 4
Scientist used ___________ method.
Choose an answer
Scientific
Non-scientific
Bot
Non
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Question # 5
_________ can be separated by physical means.
Choose an answer
Mixture
Compound
Solution
Nil
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Question # 6
It is heterogeneous mixture
Choose an answer
Sand
Milk
Air
Brass
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Question # 7
The symbol of sodium is :
Choose an answer
Sa
Na
Pa
Ca
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Question # 8
The number of proton in an atom is called _________ number.
Choose an answer
Molecule
Formula
Atomic
Molar
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Question # 9
An ion is a charged particles:
Choose an answer
True
False
In some conditions
Never
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Question # 10
The No. of atoms in 1 mole of carbiton is
Choose an answer
6.02 x 1021
6.02 x 1022
6.02 x 1023
6.02 x 1024
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Question # 11
Salt & water is a _________ mixture.
Choose an answer
Homogeneous
Heterogeneous
It is not mixture
Nil
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Question # 12
____________ Metals are electronegative in nature.
Choose an answer
Pure-
Noble-
Non-
Nil
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Question # 13
How many numbers of moles are equivalent to 8 grams of CO
2
?
Choose an answer
0.15
0.18
0.21
0.24
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