Atomic Structure Mcqs
Our collections of Multiple choice questions and answers focuses on study of Atomic Structure in Chemistry. These questions are chosen from a collection of most authoritative and best reference books on Chemistry. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Medical colleges entrance exams, Teaching jobs Tests and Chemical industry job interviews. One should practice our Mcqs to assimilate Atomic Structure in Chemistry comprehensively.
17. Atom cannot be divided into simple unitstheorized by
Rutherford
Dalton
Bohr
Schrodinger
18. Pressure in gas discharge tube was kept
10 torr
1 torr
0.1 torr
0.01 torr
Answer & Solution
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19. The number of fundamental particles in an atom of the lightest isotope carbon are
6
12
18
20
20. Angle of deflection was studied by
Hitorff
Stoney
William Crookes
J.Perrin
Answer & Solution
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21. Increase in atomic number is observed during
Alpha emission
Beta emission
Both a & b
Radioactivity
Answer & Solution
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22. Positive rays give flash on
AgNO3 plate
AgCl plate
ZnO
ZnS
23. Free neutron changes into proton with the emission of
Neutrino
Electron
Both a & b
Meson
Answer & Solution
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24. The value of e/m ratio of electron is
6.02 x 1023 C/kg
1.7588 x 1020 C/kg
9.1095 x 10-31 C/kg
1.7588 x 1011 C/kg
Answer & Solution
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25. Charge of electron was measured by
J.J Thomson
Millikan
Rutherford
Perrin
Answer & Solution
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26. Rutherford bombarded ______________ particles in discovery of nucleus
Gamma-rays
Alpha-rays
Beta-rays
X-rays
Answer & Solution
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27. Planks theory says energy is emitted
In continuous manner
Discontinuous manner
Simultaneously
In the form of heat
Answer & Solution
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28. Angular momentum of an electron
N2h/2?
Nk2/2?
Nh/4?
Nh/2?
29. 2nd orbit is _______ away from nucleus of H-atom as compared to 1st orbit is
2-times
3-times
4-times
6 times
30. The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be
1
3
5
7