- This Mock test contains 25 MCQ questions.
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- Determine the one correct answer out of the four available options given for each question.
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Your Score For Structure of Atoms(Chemistry) is
Question 1 of 25
1. Question1 point(s)
The ionization energy of He+ is 19.6 × 10^-18 J atom-¹. The energy of the first stationary state of Li+2 will be –CorrectIncorrect
Question 2 of 25
2. Question1 point(s)
The ionization energy of H-atom is 13.6 eV. The ionization energy of Li+2 ion will be –CorrectIncorrect
Question 3 of 25
3. Question1 point(s)
Which transition of the Hydrogen spectrum would have the same wave length as the Balmer transition, n = 4 to n = 2 of He+ spectrum –CorrectIncorrect
Question 4 of 25
4. Question1 point(s)
In hydrogen atom , an electron in its normal state absorbs two times of the energy as if requires to escape (13.6 eV) from the atom. The wave length of the emitted electron will be –CorrectIncorrect
Question 5 of 25
5. Question1 point(s)
The energy difference between the shells goes on ……….. when moved away from the nucleus.CorrectIncorrect
Question 6 of 25
6. Question1 point(s)
The ionization energy of a hydrogen atom is 13.6eV. The energy of the third-lowest electronic level in doubly ionized lithium ion (Z = 3) is –CorrectIncorrect
Question 7 of 25
7. Question1 point(s)
The magnetic quantum number for valence electron of sodium atom is –CorrectIncorrect
Question 8 of 25
8. Question1 point(s)
In an electron microscope, electrons are accelerated to great velocities. Calculate the wavelength of an electron travelling with a velocity of 7.0 megameters per second . The mass of an electron is 9.1×10^-28 g –CorrectIncorrect
Question 9 of 25
9. Question1 point(s)
A ball has a mass of 0.1 kg its velocity is 40 m/s, find out de Broglie wave length –CorrectIncorrect
Question 10 of 25
10. Question1 point(s)
Velocity of helium atom at 300 K is 2.40 x 10^2 meter per sec. What is its wave length –
(mass number of helium is 4)CorrectIncorrect
Question 11 of 25
11. Question1 point(s)
The energy difference between two electronic states is 46.12 kcal /mole. What will be the frequency of the light emitted when an electron drops from the higher to the lower energy state
(Planck’ constant = 9.52 x 10^-14 kcal sec mole^-1)CorrectIncorrect
Question 12 of 25
12. Question1 point(s)CorrectIncorrect
Question 13 of 25
13. Question1 point(s)CorrectIncorrect
Question 14 of 25
14. Question1 point(s)CorrectIncorrect
Question 15 of 25
15. Question1 point(s)
In an atom two electrons move around the nucleus in circular orbits of radii R and 4R. The ratio of the time taken by them to complete one revolution –CorrectIncorrect
Question 16 of 25
16. Question1 point(s)
A beam of electrons is accelerated by a potential difference of 10000 volts. The wavelength of the wave associated with it will be –CorrectIncorrect
Question 17 of 25
17. Question1 point(s)
The uncertainty in the position of an electron moving with a velocity of 1 × 104 cm s–1 (accurate up to 0.011%) will be :CorrectIncorrect
Question 18 of 25
18. Question1 point(s)
The total energy associated per quanta with light of wavelength 600 nm –CorrectIncorrect
Question 19 of 25
19. Question1 point(s)CorrectIncorrect
Question 20 of 25
20. Question1 point(s)CorrectIncorrect
Question 21 of 25
21. Question1 point(s)
p-orbitals are……. in shape.CorrectIncorrect
Question 22 of 25
22. Question1 point(s)
Principal Quantum number describesCorrectIncorrect
Question 23 of 25
23. Question1 point(s)
Make the pairs:
a. Neutrons i. six electrons
b. p-orbital ii.-1.6×10-19 C
c. charge on electron iii. Ultraviolet region
d. Lyman series iv. ChadwickCorrectIncorrect
Question 24 of 25
24. Question1 point(s)
“No two electrons in the same atoms can have identical set of four quantum numbers”. This statement is known asCorrectIncorrect
Question 25 of 25
25. Question1 point(s)
Atoms and ions having the same number of electrons areCorrectIncorrect