## Atomic Structure MCQ Basic Level

Physics is an important subject in preparation for various Competitive exams.To keep a track of your preparation we have designed a small quiz of 10 Basic Level Questions on Atomic Structure. You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1. The Bohr's model of atoms

•  Assumes that the angular momentum of electrons is quantized
•   Uses Einstein’s photo-electric equation
•  Predicts continuous emission spectra for atoms
•   Predicts the same emission spectra for all types of atoms

Assumes that the angular momentum of electrons is quantized

Q2. In an orbital motion, the angular momentum vector is

•  Parallel to the linear momentum
•  In the orbital plane
•  Perpendicular to the orbital plane

Perpendicular to the orbital plane

Q3. The colour of the second line of Balmer series is

•  Blue
•  Yellow
•  Red
•  Violet

Blue

Q4. If the ionization energy for the hydrogen atom is 13.6 eV, the energy required to excite it from the ground state to the next higher state is nearly

•  3.4 eV
•  10.2 eV
•  12.1 eV
•  1.5 eV

10.2 eV

Q5. If r is the radius of the lowest orbit of Bohr’s model of hydrogen atom, the radius of next higher energy orbit is

•  4r
•  9r
•  16r
•  2r

4r

Q6. The kinetic energy of an electron revolving around a nucleus will be

•  Four times of P.E.
•  Double of P.E.
•  Equal to P.E.
•  Half of its P.E.

Half of its P.E.

Q7. Which state of triply ionised Beryllium has the same orbital radius as that of the ground state of hydrogen

•  n = 1
•  n = 2
•  n = 3
•  n = 4

n = 2

Q8. Dalton’s atomic theory was in accordance with

•   Conservation of energy
•  Conservation of mass
•   Conservation of charge
•  None of these

Conservation of mass

Q9. Which of the following transition will have highest emission wavelength

•  n = 2 to n = 1
•  n =1 to n = 2
•  n =2 to n = 5
•  n =5 to n = 2

n = 2 to n = 1

Q10. In which of the following systems will the radius of the first orbit (n = 1) be minimum

•  Single ionized helium
•  Deuterium atom
•   Hydrogen atom
•  Double ionized lithium

Double ionized lithium

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Atomic Structure MCQ Basic Level