Structure of Atom | Atomic Structure: MCQs | Question – Paper 1 11

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Topic: Structure of Atom, Test No.: 01, Total MCQs: 15

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Question 1
Maximum number of electrons in a subshell with l = 3 and n = 4 is [CBSE AIPMT 2012]
A
10
B
12
C
14
D
16
Question 2
The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is [CBSE AIPMT 2012]
A
5, 0, 0, +
B
5, 1, 0, +
C
5, 1, 1, +
D
6, 0, 0, +
Question 3
Identify the wrong statement in the following [CBSE AIPMT 2012]
A
Atomic radius of the elements increases as one moves down the first group of the periodic table
B
Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the
C
Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius
D
Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius
Question 4
The work function (f) of some metals is listed below. The number of metals which will show photoelectric effect when light of 300 nm wavelength falls on the metal is [IIT JEE 2011]

Metal

Li

Na

K

Mg

Cu

Ag

Fe

Pt

W

f(eV)

2.4

2.3

2.2

3.7

4.8

4.3

4.7

6.3

4.75
A
4
B
6
C
8
D
12
Question 5
A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at: [AIEEE 2011]
A
518 nm
B
1035 nm
C
325 nm
D
743 nm
Question 6
The energy of an electron in first Bohr orbit of H-atom is –13.6 eV. The possible energy value of electron in the excited state of Li2+ is [West Bengal JEE 2011]
A
– 122.4 eV
B
30.6 eV
C
– 30.6 eV
D
13.6 eV
Question 7
The electronic transitions from n = 2 to n = 1 will produce shortest wavelength in (where n = principal quantum state) [West Bengal JEE 2011]
A
Li+2
B
He+
C
H
D
H+
Question 8
The energy required to break one mole of Cl – Cl bonds in Cl2 is 242 kJ mol–1. The longest wavelength of light capable of breaking a single Cl – Cl bond is

(c = 3 ´ 108 ms–1 and NA = 6.02 ´ 1023 mol–1) [AIEEE 2010]

A
594 nm
B
640 nm
C
700 nm
D
494 nm
Question 9
Ionisation energy of He+ is 19.6 ´ 10–18 J atom–1. The energy of the first stationary state (n = 1) of Li2+ is [AIEEE 2010]
A
4.41 ´ 10–16 J atom–1
B
–4.41 ´ 10–17 J atom–1
C
–2.2 ´ 10–15 J atom–1
D
8.82 ´ 10–17 J atom–1
Question 10
The wave number of the spectral line in the emission spectrum of hydrogen will equal to  times the Rydberg's constant if the electron jumps from ______. [Karnataka CET 2010]
A
n = 10 to n = 1
B
n = 3 to n = 1
C
n = 2 to n = 1
D
n = 9 to n = 1
Question 11
Mg2+ is isoelectronic with [Karnataka CET 2007]
A
Ca2+
B
Na+
C
Zn2+
D
Cu2+
Question 12
Which one of the following sets of ions represents a collection of isoelectronic species? [AIEEE 2006]
A
K+, Cl–, Ca2+, Sc3+
B
Ba2+, Sr2+, K+, S2–
C
N3–, O2–, F–, S2–
D
Li+, Na+, Mg2+, Ca2+
Question 13
Consider the ground state of Cr atom (Z = 24). The numbers of electrons with the azimuthal quantum numbers, l = 1 and 2 are, respectively: [AIEEE 2004]
A
12 and 4
B
12 and 5
C
16 and 4
D
16 and 5
Question 14
The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 metres per second is approximately (Planck's constant h = 6.63 × 10–34 Js] [AIEEE 2003]
A
10–33 metre
B
10–31 metre
C
10–16 metre
D
10–25 metre
Question 15
In Hydrogen atom, energy of first excited state is – 3.4 eV. Then find out KE of same orbit of Hydrogen atom. [CBSE AIPMT 2002]
A
+ 3.4 eV
B
+ 6.8 eV
C
– 13.6 eV
D
+ 13.6 eV
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11 thoughts on “Structure of Atom | Atomic Structure: MCQs | Question – Paper 1”

  • Reply ↓
    shahana

    realy very helpful for the students who are preparing for entrance exam

  • Reply ↓
    Athira

    It is a best site for those who preparing for entrance

  • Reply ↓
    Rajpure pramod

    wonderful qustion to preparing the entrances exam

  • Reply ↓
    Anhaar Ajaz

    Nice questions but there should have been solutions to them too…… 🙂

  • Reply ↓
    SAKSHI

    please give the solutions of these problems . it will be beneficial for me
    THANKYOU