Atoms and Nuclei Test

Result

Atoms and Nuclei Test - 15

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

The spectrum of an oil flame is an example for

A
line emission spectrum

B
continuous emission spectrum

C
line absorption spectrum

D
band emission spectrum
Question 2
4 / -1

Two energy levels of an electron in an atom are separated by 2.3 eV. The frequency of radiation emitted when the electrons go from higher to lower level is

A
6.95 × 10¹⁴ Hz

B
3.68 × 10¹⁵ Hz

C
5.5 × 10¹⁴ Hz

D
9.11 × 10¹⁵ Hz
Question 3
4 / -1

Of the following transitions in the hydrogen atom, the one which gives an emission line of the highest frequency is

A
n = 1 to n = 2

B
n = 2 to n = 1

C
n = 3 to n = 10

D
n = 10 to n = 3
Question 4
4 / -1

For an electron in the second orbit of Bohr's hydrogen atom, the moment of linear momentum is

A
nπ

B
2πh

C
2h/π

D
h/π

Solution
Question 5
4 / -1

The wavelength of radiation emitted is λ₀ when an electron jumps from the third to the second orbit of hydrogen atom. For the electron jump from the fourth to the second orbit of hydrogen atom, the wavelength of radiation emitted will be

A

B

C

D
Question 6
4 / -1

A

B

C

D
None of these
Question 7
4 / -1

The transition from the state n = 4 to n = 3 in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from

A
2 → 1

B
3 → 2

C
4 → 2

D
5 → 3
Question 8
4 / -1

For hydrogen atom electron in n th Bohr orbit, the ratio of radius of orbit to its de-Broglie wavelength is

A

B

C

D
Question 9
4 / -1

The shortest wavelength which can be obtained in hydrogen spectrum is (R = 10⁷ m^-1)

A
100 Å

B
800 Å

C
1300 Å

D
2100 Å
Question 10
4 / -1

In a hydrogen atom, the electron is making 6.6 × 10¹⁵ rev s^-1 around the nucleus in an orbit of radius 0.528 Å . The magnetic moment (A – m²) will be

A
1 × 10^-15 unit

B
1 × 10^-10 unit

C
1 × 10^-23 unit

D
1 × 10^-27 unit

Solution