Atoms and Nuclei Test

Result

Atoms and Nuclei Test - 1

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following value is the correct order of nuclear density?

A
5 × 10⁵ kg/m³

B
9 × 10¹⁰ kg/m³

C
3 × 10²¹ kg/m³

D
2 × 10¹⁷ kg/m³
Question 2
4 / -1

The nucleus of an atom consists of

A
electrons and protons

B
electrons, protons and neutrons

C
electrons and neutrons

D
neutrons and protons
Question 3
4 / -1

In Rutherford scattering experiment, what will be the correct angle for a scattering for an impact parameter b = 0?

A
90^o

B
270^o

C
0^o

D
180^o
Question 4
4 / -1

In hydrogen atom, an electron jumps from bigger orbit to smaller orbit so that radius of smaller orbit is one-fourth of radius of bigger orbit. If speed of electron is bigger orbit was v, then speed in smaller orbit is

A
v/4

B
v/2

C
v

D
2v
Question 5
4 / -1

If the electron in the hydrogen atom jumps from third orbit to second orbit the wavelength of the emitted radiation in term of Rydberg constant is

A
6/5R

B
36/5R

C
64/7R

D
None of these
Question 6
4 / -1

The ratio of the wavelength for 2 → 1 transition in Li⁺⁺, He⁺ and H is

A
1 : 2 : 3

B
1 : 4 : 9

C
4 : 9 : 36

D
3 : 2 : 1
Question 7
4 / -1

If the ratio of radii of two spheres of same material is 1 : 4, then the ratio of their heat capacities is

A
1/64

B
1/32

C
1/16

D
1/4

Solution
Question 8
4 / -1

The ratio of radii of the nuclei, ₁₃ Al²⁷ and ₅₂Te¹²⁵ is

A
13 : 52

B
27 : 125

C
3 : 5

D
14 : 73
Question 9
4 / -1

Assume that a neutron breaks into a proton and an electron. The energy released during this process is (Mass of neutron =1.6725 × 10^-27 kg, mass of electron = 9 × 10^-31 kg,)

A
0.9 MeV

B
7.10 MeV

C
6.30 MeV

D
5.4 MeV

Solution
Question 10
4 / -1

A

B

C

D