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9th Class Chemistry Chapter 1 Fundamentals of Chemsitry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
It is a triatomic molecule
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Sodium chloride
Water
Chalk
Glucose
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Question # 2
It is heterogeneous mixture
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Sand
Milk
Air
Brass
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Question # 3
O3, Ozone is _________ molecules.
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Homoatomic
Hetroatomic
Monoatomic
Nil
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Question # 4
The symbol of sodium is :
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Sa
Na
Pa
Ca
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Question # 5
_________ which occupies space and have mass.
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Matter
Atom
Molecule
All of above
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Question # 6
A _________ is a pure substance is made up of two or more elements.
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Mixture
Elements
Solution
Compound
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Question # 7
Which one of the following element is found in most abundance in the earth's crust?
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Oxygen
Aluminum
Silicon
Iron
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Question # 8
Elements are represented by chemical _________
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Abbreviation
Unit
Symbols
It can be represented
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Question # 9
Electrons carry _________ charge.
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+
_
Neutral
Bouble Positive
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Question # 10
The empirical formula of glucose is
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CHO
CH2O
C2HO
CHO2
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Question # 11
Free radical is a
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Extremely stable
Extremely reactive
Extremely inert
All of these
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Question # 12
Electron _____________ energy when thy jump from higher to lower level.
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Absorb
Radiate
Nothing
Nil
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Question # 13
Mass no is represented by :
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A
B
C
D
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Question # 14
The value of Avogadro 'no is:
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6.023×1024
6.023×1026
6.023×1023
6.023×1020
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Question # 15
The valency of nitrogen is
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1
2
3
4
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