Preparation and solution of MCQs of chemistry class 11 are considered tough enough. mcqs of chemistry class 11 are not such simple as other's books. Chemistry MCQs need a special and comprehensive explanation for solutions. So, here you are given a concept review of the most important mcqs of chemistry class 11
Download or Preview chemistry class 11 mcqs with answers to Chapter 5 Atomic Structure. These mcqs are also important for the preparation of the Entrance exam UHS NMDCAT and UET.
Chemistry class 11 mcqs Importance
It is a tough and difficult task to solve chemistry class 11 MCQs. Students
must need full conceptual knowledge of chemistry class 11 mcqs for excellent
marks in Class 11 Chemistry. All the important mcqs of class 11 chemistry chapter 5 Atomic Structure are here for you. These questions are taken from past
papers of 1st-year chemistry of all Punjab Board of Pakistan as ;
Bahawalpur Board
D.G.Khan Board
Faisalabad Board
Gujranwala Board
Lahore Board
Multan Board
Rawalpindi Board
Post is created and designed with intense care and diligence.
These questions (MCQs) are top repetitive in chemistry Class 11 Past Papers. Each
question has a detailed answer explanation. In this way, you learn mcqs of chemistry class 11 Chapter 5 Atomic Structure, Comprehensively.
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Questions are based on the current chemistry class 11 syllabus according
to Punjab Textbook Board.
About This Chapter
Chapter no. 5 Atomic Structure of Chemistry class enables the students to learn.
- Discovery of the electron
- Properties of cathode rays
- Discovery of proton
- Properties of positive rays
- Discovery of the neutron by Chadwick experiment
- Measurement of EM value of electron
- Measurement of the charge on electron Millikan's Oil Droplet method
- Rutherford's atomic model (discovery of the nucleus)
- Planck's Quantum theory
- Derivation of the radius of a revolving electron in the nth orbital
- Spectrum and types of spectrum
- Hydrogen spectrum
- Defects of Bohr's atomic model
- X-rays and production of X rays
- Moseley law
- Wave-particle nature of matter
- De Broglie equation
- Heisenberg uncertainty principle
- Wave mechanical model of the atom
- Principal quantum number
- Azimuthal quantum number
- Magnetic quantum number
- Spin quantum number
- Electronic distribution
- Aufbau principle Pauli's exclusion principle and Hund's rule
This Post "mcqs of chemistry class 11 Chapter 5 Atomic Structure" covers all important MCQs that are top repetitive
in past papers relevant to the above-mentioned topics.
👉For Answers to the following questions click the show answer button.
1. Neutron was discovered by:
(A) William Crookes
(B) Rutherford
(C) Goldstein
(D) Chadwick
(D) Chadwick
2. How many times the mass of a neutron is greater than that of the electron:
(A) 1840
(B) 1800
(C) 6800
(D) 3200
(A) 1840
3. The nature of positive rays depends upon
(A) Nature of electrode
(B) Nature of residual gas
(C) Nature of the discharge tube
(D) Voltage supplied
(B) Nature of residual gas
4. Negative charge on cathode rays was established by:
(A) Goldstein
(B) J. Perin
(C) J.J Thomson
(D) William Crookes
(C) J.J Thomson
5. Cathode rays strike Alumina and produce -----color:
(A) Green
(B) Yellow
(C) Blue
(D) Red
(D) Red
6. Total number of the spectral region in a spectrum is:
(A) 4
(B) 6
(C) 7
(D) 8
(C) 7
7. According to Bohr's atomic model, radius of 2nd orbit of a hydrogen atom is:
(A) 0.529°A
(B) 5.0°A
(C) 4.0°A
(D) 2.116°A
(D) 2.116°A
8. The value of Planck's Constant is:
(A) 6.62 ✖ 10-34 J.s
(B) 6.62 ✖ 10-27 J.s
(C) 6.62 ✖ 10-21 J.s
(D) 6.62 ✖ 10-33 J.s
(A) 6.62 ✖ 10-34 J.s
9. The wavenumber of light emitted by a certain source is 2 ✖ 106 m-1, the wavelength of this light will be:
(A) 370nm
(B) 500nm
(C) 250nm
(D) 200nm
(B) 500nm
10. In the ground state of an atom the electron is present
(A) In the nucleus
(B) In the second shell
(C) Nearest to the nucleus
(D) Farthest to the nucleus
(C) Nearest to the nucleus
11. An orbital that is Spherical and symmetrical is:
(A) s-orbital
(B) p-orbital
(C) d-orbital
(D) f-orbital
(A) s-orbital
12. Quantum number values for 2p orbitals are:
(A) n=1, l=1
(B) n=1, l=2
(C) n=2, l=2
(D) n=2, l=1
(D) n=2, l=1
13. Bohr's model of the atom is contradicted by:
(A) De Broglie theorem
(B) Heisenberg's Uncertainty principle
(C) Planck's constant
(D) All of above
(B) Heisenberg's Uncertainty principle
14. Splitting of spectral lines of hydrogen atoms under the influence of a magnetic field is called:
(A) Photoelectric effect
(B) Zeeman effect
(C) Stark effect
(D) Compton's affect
(B) Zeeman effect
15. Splitting of spectral lines when excited atoms are subjected to a strong electric field is called
(A) Photoelectric effect
(B) Zeeman effect
(C) Stark effect
(D) Compton's affect
(C) Stark effect
16. When 6d orbital is complete, the entering electron will go to:
(A) 7f
(B) 7s
(C) 7p
(D) 7d
(C) 7p
17. Orbitals having the same energy are called:
(A) Valence orbitals
(B) Hybrid orbitals
(C) Degenerate orbitals
(D) d-orbitals
(C) Degenerate orbitals
18. The velocity of a photon is:
(A) Independent of its wavelength
(B) Depends upon its wavelength
(C) Equal to the square of its amplitude
(D) Depends upon its source
(A) Independent of its wavelength
19. The highest electronegative element in the periodic table is:
(A) Oxygen
(B) Nitrogen
(C) Chlorine
(D) Fluorine
(D) Fluorine
20. Which of the following molecule has a coordinate covalent bond?
(A) NH4Cl
(B) HCl
(C) AlCl3
(D) NH3
(A) NH4Cl
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