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9th Class Chemistry Chapter 3 Periodic Table and Periodicity of Properties English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Along the period which one of the following decrease:
Choose an answer
Atomic radius
ionization energy
electron affinity
electronegative
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Question # 2
Mendeleev periodic table was based upon the:
Choose an answer
electronic configuration
atomic mass
atomic number
completion of a subshell
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Question # 3
Which element has highest electronegativity?
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CI
F
Br
I
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Question # 4
________________ elements were discovered in year 1800.
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34
35
36
37
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Question # 5
Which of following does not belong to p-block?
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IIIA
IVA
VA
VIB
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Question # 6
The number of periods is:
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6
7
8
9
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Question # 7
4
th
and 5
th
period of the long form of periodic table are called
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short periods
Normal periods
Long periods
Very long periods
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Question # 8
The elements of group 17 are called:
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Carbon family
Noble gases
Alkaline earth metals
Halogen family
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Question # 9
.................... of an atom is not fixed.
Choose an answer
Size
Mass
Electronegativity
Nuclear char
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Question # 10
An ________________ scientist arranged the elements in order in periodic table.
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English
Italian
African
Indian
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Question # 11
Which one of the following halogen has lowest electronegative?
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fluorine
chlorine
bromine
iodine
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Question # 12
Mark the incorrect statement about ionization energy:
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it is measured in Kjmol
-1
it is absorption of energy
it decreases in period
it decreases in a group
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Question # 13
The no.of electrons in the valence shell of noble gases is
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1
6
7
8
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