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9th Class Chemistry English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
The no.of electrons in the valence shell of noble gases is
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1
6
7
8
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Question # 2
Gases have fixed ____________
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Shape
Volume
Area
Nil
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Question # 3
____________ Metals are electronegative in nature.
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Pure-
Noble-
Non-
Nil
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Question # 4
Number of protons+ neutrons is :
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Atomic mass
Mass numbers
Both
Nil
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Question # 5
The most common example of corrosion is:
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Chemical decay
Rusting of iron
Rusting of aluminum
Rusting of tin
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Question # 6
Which one is moderate reactive metal?
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Pb
Na
Ca
Mg
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Question # 7
Cu + 2AgNO3 -------> Cu(NO3) +2Ag. In this reaction reducing agent is:
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Cu
AgNO3
Cu(NO3)2
Ag
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Question # 8
_________ elements naturally occurring.
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92
118
93
117
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Question # 9
There are _________ elements found till now .
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120
118
119
117
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Question # 10
Which one of the following is the most penetrating?
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protons
electrons
neutrons
alpha paticles
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Question # 11
Addition of OXYGEN is called.
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Reduction
Conduction
Oxidation
Nil
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Question # 12
Carbon exists in ________________ allotropic forms.
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1
2
3
4
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Question # 13
Which one of the following is the weakest force among the atom?
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ionic force
metallic force
intermolecular force
covalent force
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