Atoms and Nuclei Test

Result

Atoms and Nuclei Test - 21

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

₇N¹⁴ is bombarded with ₂He⁴. The resulting nucleus is ₈O¹⁷ with the emission of

A
neutrino

B
anti - neutrino

C
proton

D
neutron
Question 2
4 / -1

A
28.24 MeV

B
17.28 MeV

C
1.46 MeV

D
39.2 MeV
Question 3
4 / -1

Calculate the energy released when three α-particles combined to form a ¹²C C nucleus, the mass defect is (atomic mass of ₂He⁴ is 4.002603 u)

A
0.007809 u

B
0.002603 u

C
4.002603u

D
0.5u
Question 4
4 / -1

If M is the atomic mass and A is the mass number, packing fraction is given by

A

B

C

D
Question 5
4 / -1

If ₉₂U²³⁸ emits 8 α – particles and 6 β – particles, then the resulting nucleus is

A
₈₂U²⁰⁶

B
₈₂Pb²⁰⁶

C
₈₂U²¹⁰

D
₈₂U²¹⁴
Question 6
4 / -1

A
73

B
74

C
75

D
72
Question 7
4 / -1

Mass of the nucleons together in a heavy nucleus is

A
greater than mass of nucleus

B
equal to mass of nucleus

C
same as mass of nucleus

D
None of the above
Question 8
4 / -1

If a star can convert all the He nuclei completely into oxygen nuclei, the energy released per oxygen nuclei is (mass of the nucleus is 4.0026 amu and mass of oxygen nucleus is 15.9994 amu)

A
7.6 MeV

B
56.12 MeV

C
10.24 MeV

D
23.9 MeV

Solution
Question 9
4 / -1

A

B

C

D
Question 10
4 / -1

Two nucleons are at a separation of one Fermi. Protons have a charge of + 1.6 × 10^-19 C. The net nuclear force between them is F₁, if both are neutrons, F₂ if both are protons and F₃ if one is proton and other is neutron

A
F₁ = F₂ > F₃

B
F₁ = F₂ = F₃

C
F₁ < F₂ < F₃

D
F₁ > F₂ > F₃