Structure of Atom MCQ Questions for Class 11 Chemistry Chapter 2 with Answers

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MCQ Questions for Class 11 Chemistry with Answers


Q1. In Hydrogen atom, energy of first excited state is – 3.4 eV. Then find out KE of same orbit of Hydrogen atom

(A) 3.4 eV
(B) 6.8 eV
(C) -13.6 eV
(D) +13.6 eV

(A) 3.4 eV


Q2. The charge to mass ratio of α – particles is approximately …… the charge to mass
ratio of protons

(A) Twice
(B) Half
(C) Four times
(D) Six times

(B) Half


Q3. Neutron is discovered by

(A) Chadwick
(B) Yukawa
(C) Rutherford
(D) Dalton

(A) Chadwick


Q4. The number of nodal planes in px orbital is

(A) one
(B) two
(C) three.
(D) zero

(A) one


Q5. Bohr atomic model can explain

(A) the spectrum of hydrogen atom only
(B) spectrum of an atom or ion containing one electron only
(C) the spectrum of hydrogen molecule
(D) the solar spectrum

(B) spectrum of an atom or ion containing one electron only


Q6. 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:

(A) 518 nm
(B) 1035 nm
(C) 325 nm
(D) 743 nm

(D) 743 nm


Q7. Maximum number of electrons in a subshell with l = 3 and n = 4 is

(A) 10
(B) 12
(C) 14
(D) 16

(C) 14


Q8. Which of the following is never true for cathode rays ?

(A) They are electromagnetic waves.
(B) They produce heat.
(C) They produce mechanical pressure
(D) They possess kinetic energy.

(A) They are electromagnetic waves.


Q9. The lightest particle is

(A) positron
(B) neutron
(C) proton
(D) None of these

(A) positron


Q10. In a hydrogen atom, if energy of an electron in ground state is 13.6 eV, then that in the 2nd excited state is

(A) 1.51 eV
(B) 3.4 eV
(C) 6.04 eV
(D) 13.6 eV

(A) 1.51 eV


Q11. Consider the ground state of Cr atom (Z = 24). The numbers of electrons with the azimuthal quantum numbers, l = 1 and 2 are, respectively:

(A) 12 and 4
(B) 12 and 5
(C) 16 and 4
(D) 16 and 5

(B) 12 and 5


Q12. Azimuthal quantum number determines the

(A) size
(B) spin
(C) orientation
(D) angular momentum of orbitals

(D) angular momentum of orbitals


Q13. The energy of electron in the first Bohr orbit of H atom is 13.6 eV. The possible energy value (s) of the excited state(s) for electron in Bohr orbitals of hydrogen is (are)

(A) – 3.4 eV
(B) -4.2eV
(C) – 6.8 eV
(D) + 6.8 eV

(A) – 3.4 eV


Q14. The magnetic quantum number specifies

(A) Size of orbitals
(B) Shape of orbitals
(C) Orientation of orbitals
(D) Nuclear Stability

(C) Orientation of orbitals


Q15. For principal quantum number n = 4, the total number of orbitals having l = 3 is

(A) 3
(B) 7
(C) 5
(D) 9

(B) 7


We Think the given NCERT MCQ Questions for class 11 Chemistry book Chapter 2 Structure of Atom with Answers Pdf free download will assist you. If you’ve got any queries regarding CBSE Class 11 Chemistry of Structure of Atom MCQs Multiple Choice Questions with Answers, drop a comment below and that we will come back to you soons.


MCQ Questions for Class 11 Chemistry Chapter wise with Answers


Lesson 1. Some Basic Concepts of Chemistry Class 11 MCQ Questions
Lesson 2. Structure of Atom Class 11 MCQ Questions
Lesson 3. Classification of Elements and Periodicity in Properties Class 11 MCQ Questions
Lesson 4. Chemical Bonding and Molecular Structure Class 11 MCQ Questions
Lesson 5. States of Matter Class 11 MCQ Questions
Lesson 6. Thermodynamics Class 11 MCQ Questions
Lesson 7. Equilibrium Class 11 MCQ Questions
Lesson 8. Redox Reactions Class 11 MCQ Questions
Lesson 9. Hydrogen Class 11 MCQ Questions
Lesson 10. The s-Block Elements Class 11 MCQ Questions
Lesson 11. The p-Block Elements Class 11 MCQ Questions
Lesson 12. Organic Chemistry: Some Basic Principles and Techniques Class 11 MCQ Questions
Lesson 13. Hydrocarbons Class 11 MCQ Questions
Lesson 14. Environmental Chemistry Class 11 MCQ Questions

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