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9th Class Chemistry Chapter 2 Structure of Atoms English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
In ________________ Rutherford's was studying radiations.
Choose an answer
1911
1931
1921
1922
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Question # 2
When U-235 breaks up, it produces?
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electrons
neutrons
protons
nothing
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Question # 3
The no.of neutrons in deutrium is
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1
2
3
4
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Question # 4
Who discovered the proton?
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Goldstein
J.J Thomson
Neil Bohr
Ruther Ford
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Question # 5
Canal rays are actually
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Electrons
Protons
Neutrons
X-rays
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Question # 6
The isotopes C-12 is present in abundance of:
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96.6%
97.6%
99.7%
None of these
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Question # 7
Which of the following can accommodate 18 electrons?
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K
L
M
N
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Question # 8
In ________________ Bohr considered hydrogen atom for his model .
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1913
1916
1917
1918
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Question # 9
Hydrogen has ________________ isotopes.
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1
2
3
4
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Question # 10
The isotopes of an element have different number of
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Electrons
Protons
Neutrons
Protons & Neutrons
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Question # 11
For diagnosis of goiter in thyroid gland we use
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Co-60
C-14
I-131
Sr-90
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Question # 12
The maximum no.of electrons that can be accommodated in M shell are
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2
8
18
32
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