Medical Sample papers

NEET Atomic Structure Sample Paper

Structure of Atom (Atomic Structure)

40 Objective type questions with answers on Structure of Atom (Atomic Structure) for NEET and other Medical Entrance Exam.

MCQs on Structure of Atom

Question 1
If value of azimuthal quantum number  is 2, then total possible values of magnetic quantum number will be
A
5
B
3
C
7
D
2
Question 2
The quantum number ‘m’ of a free gaseous atom is associated with
A
The shape of the orbital
B
The effective volume of the orbital
C
The energy of the orbital in the absence of a magnetic field
D
The spatial orientation of the orbital
Question 3
When an electron jumps from lower to higher orbit, its energy
A
Decreases
B
Increases
C
Remains the same
D
None of these
Question 4
The de-Broglie equation applies

Related: Hydrocarbons Sample Paper

A
To protons only
B
All the material object in motion
C
To electrons only
D
To neutrons only
Question 5
The nucleus of the element 21E45 contains

Related: NEET Chemistry Question Bank

A
24 protons and 21 neutrons
B
45 protons and 21 neutrons
C
21 protons and 45 neutrons
D
21 protons and 24 neutrons
Question 6
Tritium is the isotope of
A
Sulpher
B
Carbon
C
Hydrogen
D
Oxygen
Question 7
The atomic number of an element is always equal to
A
Number of neutrons in the nucleus
B
Atomic weight divided by 2
C
Weight of the nucleus
D
Electrical charge of the nucleus
Question 8
Which of the following is not true in Rutherford’s nuclear model of atom
A
The number of protons and neutrons are always equal
B
Protons and neutrons are present inside nucleus
C
Volume of nucleus is very small as compared to volume of atom
D
The number of electrons and protons are always equal
Question 9
Ratio of radii of second and first Bohr orbits of H atom
A
3
B
5
C
4
D
2
Question 10
If n = 3, then the value of ‘l’ which is incorrect
A
2
B
3
C
1
D
0
Question 11
Positive ions are formed from the neutral atom by the
A
Loss of protons
B
Increase of nuclear charge
C
Loss of electrons
D
Gain of protons
Question 12
Positive ions are formed from the neutral atom by the
A
Loss of protons
B
Loss of electrons
C
Gain of protons
D
Increase of nuclear charge
Question 13
Visible range of hydrogen spectrum will contain the following series
A
Brackett
B
Pfund
C
Lyman
D
Balmer
Question 14
The explanation for the presence of three unpaired electrons in the nitrogen atom can be given by
A
Hund's rule
B
Uncertainty principle
C
Aufbau's principle
D
Pauli's exclusion principle
Question 15
Bohr's model can explain
A
The spectrum of hydrogen molecule
B
Spectrum of atom or ion containing one electron only
C
The solar spectrum
D
The spectrum of hydrogen atom only
Question 16
The number of electrons which can be accommodated in an orbital is

Related: NEET Thermodynamics Sample Paper

A
Two
B
One
C
Four
D
Three
Question 17
The maximum number of electrons present in an orbit l = 3, is
A
14
B
6
C
8
D
10
Question 18
A moving particle may have wave motion, if

Related: Wave Optics (Physics) Sample paper

A
Its mass is very high
B
Its mass is very high and velocity is negligible
C
Its velocity is negligible
D
Its mass is negligible
Question 19
Energy of atomic orbitals in a particular shell is in the order
A
f > d > s > p
B
s < p < d < f
C
s > p > d > f
D
p > d > f > s
Question 20
A metal surface is exposed to solar radiations
A
The emitted electrons have energy less than a maximum value of energy depending upon frequency of incident radiations
B
The emitted electrons have zero energy
C
The emitted electrons have energy equal to energy of photos of incident light
D
The emitted electrons have energy less than maximum value of energy depending upon intensity of incident radiation
Question 21
The magnetic quantum number for an electron when the value of principal quantum number is 2 can have
A
9 values
B
3 values
C
2 values
D
6 values
Question 22
The number of electrons in one molecule of CO2 are
A
66
B
88
C
22
D
44
Question 23
When an electron jumps from L to K shell
A
Energy is released
B
Energy is absorbed
C
Energy is sometimes absorbed and sometimes  released
D
Energy is neither absorbed nor released
Question 24
Krypton (36Kr) has the electronic configuration (18Ar) 4s2, 3d10, 4p6. The 37th electron will go into which one of the following sub-levels
A
4f
B
5s
C
3p
D
4d
Question 25
The number of electrons which can be accommodated in an orbital is
A
Four
B
Two
C
One
D
Three
Question 26
The shape of an orbital is given by the quantum number
A
l
B
s
C
n
D
m
Question 27
Ions which have the same electronic configuration are those of

Related: AIIMS Biology Practice Paper

A
Sodium and potassium
B
Lithium and sodium
C
Oxygen and chlorine
D
Potassium and calcium
There are 27 questions to complete.
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Vishal Arora

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