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Previous year question hub

Atomic Structure - Physical Chemistry - Chemistry Previous Year Questions

Practice Atomic Structure - Physical Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

6Papers
6Years
12Questions
1Topics

Atomic Structure question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Atomic Structure. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Not classified 12 100%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Multiple Choices 12 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
12 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
12 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Atomic Structure
12 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

BITSAT 2025
2 Qs
BITSAT 2024
2 Qs
BITSAT 2023
1 Qs
BITSAT 2022
1 Qs
BITSAT 2021
4 Qs
BITSAT 2020
2 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
BITSAT 202520252View paper
BITSAT 202420242View paper
BITSAT 202320231View paper
BITSAT 202220221View paper
BITSAT 202120214View paper
BITSAT 202020202View paper

All Atomic Structure previous year questions

Practice every matching question in batches of 20, with every available option.

1
2020 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2020

Ionisation energy of H-atom is 13.6 eV. The wavelengths of the spectral line emitted when an electron in Be3+ comes them 5th energy level to 2nd energy level is

A
43.5 nm
B
4350 nm
C
4.35 nm
D
435 nm
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2
2020 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2020

If the quantum number I could have the value 'n' also then, Sc(21) would have electronic configuration as (other rules strictly followed)

A
1s2 1p6 2s2 2p6 2d3 3s2
B
1s2 1p6 2s2 2p6 3s2 2d3
C
1s2 2s2 2p6 3s2 3p6 3d1 4s2
D
1s2 2s2 2p6 3s2 3p6 3d3
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3
2021 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2021

Rutherford model could not explain

A
electronic structure of an atom
B
stability of an atom
C
Both (a) and (b)
D
None of the above
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4
2021 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2021

What is the magnetic moment of Ti2+ ? (Given : Atomic number = 22)

A
\(\sqrt8\)
B
\(\sqrt{10}\)
C
\(\sqrt6\)
D
\(\sqrt9\)
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5
2021 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2021

Ionisation energy for H+ ion is proportional to rn, then value of n is

A
1
B
\(-\)1
C
2
D
\(-\)2
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6
2021 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2021

If Rydberg constant is same for all elements, the angular momentum and energy of Li2+ of which orbital is equal to angular momentum and energy of 1 s-orbital of hydrogen atom?

A
3s
B
4s
C
2p
D
3d
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7
2022 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2022

Which one of the following statements in relation to the hydrogen atom is correct?

A
3s, 3p and 3d-orbitals all have the same energy.
B
3s and 3p-orbitals are of lower energy than 3d-orbital.
C
3p-orbital is lower in energy than 3d-orbital.
D
3s-orbital is lower in energy than 3p-orbital.
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8
2023 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2023

Which of the following statements does not form a part of Bohr's model of hydrogen atom?

A
The position and velocity of the electrons in the orbit cannot be determined simultaneously.
B
The electron in the orbit nearest the nucleus has the lowest energy.
C
Electrons revolve in different orbits around the nucleus.
D
Energy of the electrons in the orbit is quantised.
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9
2024 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2024
The degeneracy of hydrogen atom that has energy equal to $ \frac{-R_{\mathrm{H}}}{9} $ is (where, $ R_{\mathrm{H}}= $ Rydberg constant)
A
6
B
8
C
5
D
9
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10
2024 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2024
If the de-broglie wavelength of a particle of mass $ (m) $ is 100 times its velocity. Then, its value in terms of its mass $ (m) $ and plank constant $ (h) $ is
A
$\frac{1}{10} \sqrt{\frac{m}{h}} $
B
$10 \sqrt{\frac{h}{m}} $
C
$\frac{1}{10} \sqrt{\frac{h}{m}} $
D
$10 \sqrt{\frac{m}{h}} $
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11
2025 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2025

If the de-Broglie wavelength of a particle is equal to $10 \sqrt{h / m}$, then what is the ratio of its speed to mass?

A

$\frac{h^2}{10 m^{3 / 2}}$

B

$\frac{\sqrt{h}}{10 \sqrt{m}}$

C

$\frac{h}{100 \sqrt{m}}$

D

$\frac{\sqrt{h}}{m^{3 / 2} 10}$

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12
2025 · Chemistry · Physical Chemistry · Atomic Structure
BITSAT 2025

The degeneracy of a hydrogen atom whose energy equals $-R_{\mathrm{H}}$ / 16

A

8

B

9

C

16

D

10

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