Bohr Model of a Hydrogen Atom (its Postulates, Derivation of the Relations for the Energy...) NEET Questions

Physical Chemistry - Atomic Structure

Bohr Model of a Hydrogen Atom (its Postulates, Derivation of the Relations for the Energy...) MCQ Questions


13.
The limitation of Bohr’s model was its failure to explain:
A.
Hydrogen spectrum
B.
Atomic radius
C.
Fine structure
D.
Energy levels
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ANSWER :
C. Fine structure
14.
The number of spectral lines produced when an electron jumps from n=4 to n=1 is:
A.
2
B.
3
C.
4
D.
6
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ANSWER :
C. 4
15.
Bohr’s theory was modified by:
A.
Rutherford
B.
Schrödinger
C.
Einstein
D.
Heisenberg
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ANSWER :
B. Schrödinger
16.
Which scientist’s work contradicted Bohr’s model?
A.
De Broglie
B.
Einstein
C.
Newton
D.
Dalton
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ANSWER :
A. De Broglie
17.
What is the minimum energy required to ionize a hydrogen atom from its ground state?
A.
13.6 eV
B.
10.2 eV
C.
3.4 eV
D.
1.51 eV
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ANSWER :
A. 13.6 eV
18.
The frequency of radiation emitted when an electron jumps from n=2 to n=1 is proportional to:
A.
1/n
B.
1/n²
C.
n²
D.
n
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ANSWER :
A. 1/n