MDCAT Physics Chapter 16 MCQ Test With Answer for (Nuclear Physics)

MCQ's Test For MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test

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MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test

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Question # 1

Beta particles have less ionizing power than that of alpha particles because:

Question # 2

In an 𝑎 −decay:

Question # 3

The half-life of a radioactive element which has only 1//32 of its original mass left after a lapse of 60 days is:

Question # 4

The particles equal in mass or greater than mass of protons are called:

Question # 5

The binding energy per nucleon is:

Question # 6

When a radioactive nucleus remits a beta particle, the proton neutron ratio:

Question # 7

When a radioactive nucleus emits a 𝖰 −paritcles, the mass number of the atom:

Question # 8

In 420 days, the activity of a sample of polonium (Po) fell to one-eight of its initial value. The half-life of polonium is :

Question # 9

A radioactive nucleus can emit:

Question # 10

During a negative β-decay

Question # 11

In nuclear fission reaction, when the products are 140X and 94Sr, the number of neutrons emitted is

Question # 12

A radioactive isotope 𝟐𝟑𝟖 𝑼 decays consecutively to 𝟐𝟑𝟒 𝑼 the particles emitted are:

Question # 13

The number of electrons in a nucleus X of atomic number Z and mass number A is:

Question # 14

Three quarks make up a:

Question # 15

Beta particles have penetration of about:

Question # 16

The more readily fissionable isotope of uranium has an atomic mass of:

Question # 17

Which of the following have maximum ionization power?

Question # 18

For atomic nucleus, the binding energy per nucleon with increase in mass number:

Question # 19

The fusion of hydrogen into helium is more likely to take place:

Question # 20

𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:

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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 During a negative β-decay
A. An atomic electron is ejected
B. A neutron in the nucleus decays emitting an electron
C. An electron which already present within the nucleus is ejected
D. A part of binding energy of nuclei is converted into electron
2 Which row is correct for fission and for fusion?
A. Produces larger nuclei
B. Produces larger nuclei
C. Produces smaller nuclei
D. Produces smaller nuclei
3 The uranium Nucleus 𝟐𝟑𝟖 𝑼 undergoes successive decays, emitting respectively 𝑎 − 𝒓𝒂𝒚,𝖰 − 𝒓𝒂𝒚 𝒂𝒏𝒅 − 𝒓𝒂𝒚𝒔. What is the atomic number and atomic mass of the resulting nucleus:
A. 90, 238
B. 91, 234
C. 92, 236
D. 92, 238
4 The half-life of a radioactive element which has only 1//32 of its original mass left after a lapse of 60 days is:
A. 12days
B. 10days
C. 22days
D. 36days
5 The particles equal in mass or greater than mass of protons are called:
A. Leptons
B. Mesons
C. Baryons
D. Quarks
6 The rate of decay radioactive substance:
A. Is constant
B. Decrease exponentially with time
C. Varies inversely with time
D. Decrease linearly with time
7 Beta particles have penetration of about:
A. 100 times more than that of the gamma particles
B. 100 times less than that of an alpha ray
C. 100 times more than that of an alpha ray
D. 10 times more than that of an alpha particle
8 A radioactive substance has a half-life of 4 months. Three-fourths of the substance will decay in:
A. 5months
B. 6months
C. 8months
D. 7months
9 During a negative β-decayv
A. An atomic electron is ejected
B. A neutron in the nucleus decays emitting an electron
C. An electron which already present within the nucleus is ejected
D. A part of binding energy of nuclei is converted into electron
10 When a radioactive nucleus emits a 𝖰 −paritcles, the mass number of the atom:
A. Increases by one
B. Decreases by one
C. Remains the same
D. Decreases by four

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