Bohr's Theory Of Hydrogen Atom

Question 1

Which of the following is correct?

Accepted Answer

₁₉K³⁹ and ₂₀Ca⁴⁰ are isotones

Answer

₁H¹ and ₂He³ are isotopes

Answer

₆C¹⁴ and ₇N¹⁴ are isotopes

Answer

₉F¹⁹ and ₁₁Na²⁴ are isodiaphers

Question 2

‘Hartree’ is the atomic unit of energy and is equal to

Accepted Answer

-27.2 eV atom ^-1

Answer

-13 .6 eV atom^-1

Answer

+13.6 eV atom ^-1

Answer

+27.2 eV atom^-1

Question 3

Wave number of a spectral line for a given transition is x cm^-1 for He⁺, then its value for Be³⁺ (isoelectronic of He⁺)for the same transition is

Accepted Answer

4x cm-1

Answer

x cm-1

Answer

Answer

2x cm-1

Question 4

Which of the following electronic transitions requires that the greatest quantity of energy be absorbed by a hydrogen atom ?

Accepted Answer

n = 1 to n = 2

Answer

n = 2 to n = 4

Answer

n = 3 to n = 6

Answer

n = 3 to n = ∞

Question 5

An electron in a hydrogen atom (ground state) absorbs energy such that the kinetic energy of the emitted electron is 1.5 times the ionization energy (13.6 eV).

Q. Calculate the kinetic energy of the emitted electron.

Accepted Answer

20.4 eV

Answer

34.0 eV

Answer

-20.4 eV

Answer

-34.0 eV

Question 6

Ionisation energy of He⁺ is 19.6x10^-18 J atom ^-1. The energy of the first stationary state (n = 1)of Li²⁺ is

Accepted Answer

-4 .41 x 10^-17 J atom^-1

Answer

4.41 x 10^-16 J atom^-1

Answer

-2.20 x 10 ^-15J atom^-1

Answer

8. 82 x 10^-17J atom^-1

Question 7

The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is (a₀is Bohr radius)

[AIEEE 2012]

Accepted Answer

Answer

Answer

Answer

Question 8

Energy of the electron in nth orbit is given by E Wavelength of light required to excite an electron in an H-atom from level n = 1 to n = 2 will be (h = 6.62 x 10-³⁴ J s ; c = 3.0 x 10⁸ms ^-1)

[AIEEE 2012]

Accepted Answer

1.216x 10^-7 m

Answer

2.816x 10^-7 m

Answer

6.500x 10^-7 m

Answer

8.500x 10^-7 m

Question 9

The potential energy of an electron in the second Bohr's orbit of the he±

Accepted Answer

-27.2 eV

Answer

- 54.4 eV

Answer

-13.6 eV

Answer

-108.8 eV

Question 10

In Lyman series, shortest wavelength of H-atom appears at x m, then longest wavelength in Balmer series of He⁺ appear at

Accepted Answer

Answer

Answer

Answer

Question 11

If the radius of the first Bohr orbit is x, then de-Broglie wavelength of the electron in the third orbit is nearly

Accepted Answer

6&#960;x

Answer

2&#960;x

Answer

9x

Answer

x/3

Question 12

Direction (Q. Nos. 12-13) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d)

Radius of Bohr’s orbit of H-atom is 52.9 pm. An emission in H-atom starts from the orbit having radius 1.3225 nm and ends at 211.6 pm.

Q.

Wavelength (in nm) associated with this emission is

Accepted Answer

434.17nm

Answer

230.20 nm

Answer

144.70nm

Answer

289.40 nm

Question 13

Radius of Bohr’s orbit of H-atom is 52.9 pm. An emission in H-atom starts from the orbit having radius 1.3225 nm and ends at 211.6 pm.

Q. Spectral line appears in .......... region.

Accepted Answer

Visible

Answer

UV

Answer

near IR

Answer

far IR

Question 14

Direction (Q. Nos. 14 and 15) Choice the correct combination of elements and column I and coloumn II are given as option (a), (b), (c) and (d), out of which ONE option is correct.

Q.

Match the equation in Column I with the name type in Column II.

Accepted Answer

a

Answer

b

Answer

c

Answer

d

Question 15

lf E_n = total energy, Kn = kinetic energy, V_n = potential energy and r_n = radius of the nth orbit, then based on Bohr’s theory, match the parameter in Column I with the values in Column II.

Accepted Answer

b

Answer

a

Answer

c

Answer

d

Question 16

Direction (Q. Nos. 16 - 19) This section contains 4 questions. when worked out will result in an integer from 0 to 9 (both inclusive)

Q. The energy of an electron in the first Bohr orbit of H-atom is -13.6 eV. What is the possible value of quantum number for the excited state to have energy -3.4 eV?

Accepted Answer

Question 17

An emission is Be³⁺ in observed at 2.116 A°. In which orbit is it placed?

Accepted Answer

Question 18

At what minimum atomic number, a transition from n = 2 to n = 1 energy level results in the emission of X-rays with wavelength 3.0 x 10^-8 m?

Accepted Answer

Question 19

Find the number of waves made by a Bohr’s electron in one complete revolution in its 3^rd orbit

Accepted Answer

Bohr's Theory Of Hydrogen Atom - Free MCQ Test with solutions for NEET

MCQ Practice Test & Solutions: Bohr's Theory Of Hydrogen Atom (19 Questions)

Which of the following is correct?

‘Hartree’ is the atomic unit of energy and is equal to

Wave number of a spectral line for a given transition is x cm^-1 for He⁺, then its value for Be³⁺ (isoelectronic of He⁺)for the same transition is

Which of the following electronic transitions requires that the greatest quantity of energy be absorbed by a hydrogen atom ?

An electron in a hydrogen atom (ground state) absorbs energy such that the kinetic energy of the emitted electron is 1.5 times the ionization energy (13.6 eV).
Q. Calculate the kinetic energy of the emitted electron.

Ionisation energy of He⁺ is 19.6x10^-18 J atom ^-1. The energy of the first stationary state (n = 1)of Li²⁺ is

The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is (a₀is Bohr radius)
[AIEEE 2012]

Energy of the electron in nth orbit is given by E Wavelength of light required to excite an electron in an H-atom from level n = 1 to n = 2 will be (h = 6.62 x 10-³⁴ J s ; c = 3.0 x 10⁸ms ^-1)
[AIEEE 2012]

The potential energy of an electron in the second Bohr's orbit of the he±

In Lyman series, shortest wavelength of H-atom appears at x m, then longest wavelength in Balmer series of He⁺ appear at

If the radius of the first Bohr orbit is x, then de-Broglie wavelength of the electron in the third orbit is nearly

Radius of Bohr’s orbit of H-atom is 52.9 pm. An emission in H-atom starts from the orbit having radius 1.3225 nm and ends at 211.6 pm.
Q. Spectral line appears in .......... region.

Direction (Q. Nos. 14 and 15) Choice the correct combination of elements and column I and coloumn II are given as option (a), (b), (c) and (d), out of which ONE option is correct.
Q.
Match the equation in Column I with the name type in Column II.

lf E_n = total energy, Kn = kinetic energy, V_n = potential energy and r_n = radius of the nth orbit, then based on Bohr’s theory, match the parameter in Column I with the values in Column II.

Direction (Q. Nos. 16 - 19) This section contains 4 questions. when worked out will result in an integer from 0 to 9 (both inclusive)
Q. The energy of an electron in the first Bohr orbit of H-atom is -13.6 eV. What is the possible value of quantum number for the excited state to have energy -3.4 eV?

An emission is Be³⁺ in observed at 2.116 A°. In which orbit is it placed?

At what minimum atomic number, a transition from n = 2 to n = 1 energy level results in the emission of X-rays with wavelength 3.0 x 10^-8 m?

Find the number of waves made by a Bohr’s electron in one complete revolution in its 3^rd orbit

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Bohr's Theory Of Hydrogen Atom - Free MCQ Test with solutions for NEET

MCQ Practice Test & Solutions: Bohr's Theory Of Hydrogen Atom (19 Questions)

Which of the following is correct?

‘Hartree’ is the atomic unit of energy and is equal to

Wave number of a spectral line for a given transition is x cm-1 for He+, then its value for Be3+ (isoelectronic of He+)for the same transition is

Which of the following electronic transitions requires that the greatest quantity of energy be absorbed by a hydrogen atom ?

An electron in a hydrogen atom (ground state) absorbs energy such that the kinetic energy of the emitted electron is 1.5 times the ionization energy (13.6 eV).Q. Calculate the kinetic energy of the emitted electron.

Ionisation energy of He+ is 19.6x10-18 J atom -1. The energy of the first stationary state (n = 1)of Li2+ is

The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is (a0 is Bohr radius)[AIEEE 2012]

Energy of the electron in nth orbit is given by E Wavelength of light required to excite an electron in an H-atom from level n = 1 to n = 2 will be (h = 6.62 x 10-34 J s ; c = 3.0 x 108ms -1)[AIEEE 2012]

The potential energy of an electron in the second Bohr's orbit of the he±

In Lyman series, shortest wavelength of H-atom appears at x m, then longest wavelength in Balmer series of He+ appear at

If the radius of the first Bohr orbit is x, then de-Broglie wavelength of the electron in the third orbit is nearly

Radius of Bohr’s orbit of H-atom is 52.9 pm. An emission in H-atom starts from the orbit having radius 1.3225 nm and ends at 211.6 pm.Q. Spectral line appears in .......... region.

Direction (Q. Nos. 14 and 15) Choice the correct combination of elements and column I and coloumn II are given as option (a), (b), (c) and (d), out of which ONE option is correct.Q. Match the equation in Column I with the name type in Column II.

lf En = total energy, Kn = kinetic energy, Vn = potential energy and rn = radius of the nth orbit, then based on Bohr’s theory, match the parameter in Column I with the values in Column II.

Direction (Q. Nos. 16 - 19) This section contains 4 questions. when worked out will result in an integer from 0 to 9 (both inclusive)Q. The energy of an electron in the first Bohr orbit of H-atom is -13.6 eV. What is the possible value of quantum number for the excited state to have energy -3.4 eV?

An emission is Be3+ in observed at 2.116 A°. In which orbit is it placed?

At what minimum atomic number, a transition from n = 2 to n = 1 energy level results in the emission of X-rays with wavelength 3.0 x 10-8 m?

Find the number of waves made by a Bohr’s electron in one complete revolution in its 3rd orbit

Topic-wise MCQ Tests for NEET

Topic-wise MCQ Tests for NEET

Top Courses for NEET

About this NEET Practice Test

Explore more NEET Study Resources

Wave number of a spectral line for a given transition is x cm^-1 for He⁺, then its value for Be³⁺ (isoelectronic of He⁺)for the same transition is

An electron in a hydrogen atom (ground state) absorbs energy such that the kinetic energy of the emitted electron is 1.5 times the ionization energy (13.6 eV).
Q. Calculate the kinetic energy of the emitted electron.

Ionisation energy of He⁺ is 19.6x10^-18 J atom ^-1. The energy of the first stationary state (n = 1)of Li²⁺ is

The kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is (a₀is Bohr radius)
[AIEEE 2012]

Energy of the electron in nth orbit is given by E Wavelength of light required to excite an electron in an H-atom from level n = 1 to n = 2 will be (h = 6.62 x 10-³⁴ J s ; c = 3.0 x 10⁸ms ^-1)
[AIEEE 2012]

In Lyman series, shortest wavelength of H-atom appears at x m, then longest wavelength in Balmer series of He⁺ appear at

Radius of Bohr’s orbit of H-atom is 52.9 pm. An emission in H-atom starts from the orbit having radius 1.3225 nm and ends at 211.6 pm.
Q. Spectral line appears in .......... region.

Direction (Q. Nos. 14 and 15) Choice the correct combination of elements and column I and coloumn II are given as option (a), (b), (c) and (d), out of which ONE option is correct.
Q.
Match the equation in Column I with the name type in Column II.

lf E_n = total energy, Kn = kinetic energy, V_n = potential energy and r_n = radius of the nth orbit, then based on Bohr’s theory, match the parameter in Column I with the values in Column II.

An emission is Be³⁺ in observed at 2.116 A°. In which orbit is it placed?

At what minimum atomic number, a transition from n = 2 to n = 1 energy level results in the emission of X-rays with wavelength 3.0 x 10^-8 m?

Find the number of waves made by a Bohr’s electron in one complete revolution in its 3^rd orbit