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9th Class Chemistry Chapter 1 Fundamentals of Chemsitry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
The value of Avogadro 'no is:
Choose an answer
6.023×1024
6.023×1026
6.023×1023
6.023×1020
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Question # 2
The formula of benzene is _________
Choose an answer
C6H6O3
C6H6
C12H22
Nil
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Question # 3
Atoms as a whole is _________
Choose an answer
+
_
No
Neutral
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Question # 4
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 # 5
The molecular mass of water is
Choose an answer
16 amu
14 amu
18 amu
20 amu
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Question # 6
A _________ is a pure substance is made up of two or more elements.
Choose an answer
Mixture
Elements
Solution
Compound
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Question # 7
It is a triatomic molecule
Choose an answer
Sodium chloride
Water
Chalk
Glucose
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Question # 8
The empirical formula of glucose is
Choose an answer
CHO
CH2O
C2HO
CHO2
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Question # 9
The mass of one molecule of water is:
Choose an answer
18 amu
18g
18mg
18kg
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Question # 10
The valency of nitrogen is
Choose an answer
1
2
3
4
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Question # 11
Which one an example of heterogeneous mixture?
Choose an answer
Ice cream
Concrete
Both a & b
NiL
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Question # 12
_________ elements naturally occurring.
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92
118
93
117
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Question # 13
Salt & water is a _________ mixture.
Choose an answer
Homogeneous
Heterogeneous
It is not mixture
Nil
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