Test Instructions:
- This Mock test contains 30 MCQ questions.
- Choice and sequence for attempting questions will be as per the convenience of the candidate.

- Read each question carefully.
- Determine the one correct answer out of the four available options given for each question.

- Each question awards you 1 point.
- You can end the test any time by clicking “quiz summary>finish quiz”.


- The mock test will automatically be submitted when the time is up.

- You can review all questions once again and evaluate your mistakes by clicking “view questions” when the result is displayed.

- You can apply for Leaderboard when the result is displayed.

- You can re-attempt the exam as per your wish, yet scores of the first attempt will be recorded!
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Question 1 of 28
1. Question
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Question 2 of 28
2. Question
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Question 3 of 28
3. Question
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Question 4 of 28
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Question 5 of 28
5. Question
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6. Question
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Question 7 of 28
7. Question
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Question 8 of 28
8. Question
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Question 9 of 28
9. Question
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Question 10 of 28
10. Question
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Question 11 of 28
11. Question
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Question 12 of 28
12. Question
1 point(s)An electron jumps from 4th orbit to the 1st orbit of hydrogen atom. Given that R= 10^5 cm³. The frequency in Hz of emitted radiations will be
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Question 13 of 28
13. Question
1 point(s)The first line of balmer series has wavelength 6563 A°. What will be the wavelength of first member of lyman series ?
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Question 14 of 28
14. Question
1 point(s)Shortest wavelength in the Lyman series is 912A°. The longest wavelength in this series will be
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Question 15 of 28
15. Question
1 point(s)The ratio of largest to shortest wavelength in Lyman series of hydrogen spectra is
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Question 16 of 28
16. Question
1 point(s)If λmax = 6563 A°, then the wavelength of second line for Balmer series will be
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Question 17 of 28
17. Question
1 point(s)The ratio of angular momentum of the orbital electron in the first orbit to that in the 2nd orbit is
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Question 18 of 28
18. Question
1 point(s)The ground state energy of hydrogen atom is -13.6 eV . What is the potential energy of the electron in this state ?
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Question 19 of 28
19. Question
1 point(s)A ground state hydrogen atom has energy -13.6eV. If the electron is excited to the energy state n=3 , its energy becomes
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Question 20 of 28
20. Question
1 point(s)Energy of the lowest level of hydrogen atom is -13.6eV. The energy of the photon emitted in the transition from n=3 to n=1 is
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Question 21 of 28
21. Question
1 point(s)Number of spectral line in hydrogen atom is
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Question 22 of 28
22. Question
1 point(s)In Bohr’s theory of Hydrogen atom, the electron jumps from the higher orbit ‘n’ to lower orbit ‘p’ . The wavelength will be minimum for the transition
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Question 23 of 28
23. Question
1 point(s)The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series
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Question 24 of 28
24. Question
1 point(s)When electron jumps from n=4 level to n=1 level, the angular momentum of electron changes by
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Question 25 of 28
25. Question
1 point(s)For the hydrogen atom the energy of radiation emitted in the transition from 4th excited state to 2nd excited state, according to Bohr’s Theory is
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Question 26 of 28
26. Question
1 point(s)When ‘W’ joule of work done on a flywheel . its frequency of rotation increases from n1 Hz to n2 Hz . The M.I of flywheel about its axis of rotation is given by
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Question 27 of 28
27. Question
1 point(s)A particle is moving in a circular path of radius a under the action of an attractive potential U = -k/2r² . Its total energy is
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Question 28 of 28
28. Question
1 point(s)For increasing the angular velocity of a object by 10%, the kinetic energy has to be increased by
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