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

A radioactive substance has a half-life of 4 months. Three-fourths of the substance will decay in:

Question # 2

Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:

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

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

Question # 5

The most penetrating radiations out of the following is that of

Question # 6

The mother and daughter elements with the emission of 𝖰 − 𝒓𝒂𝒚𝒔, are called:

Question # 7

In an 𝑎 −decay:

Question # 8

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:

Question # 9

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

Question # 10

A radioactive nucleus can emit:

Question # 11

The phenomenon of radioactivity is associated with:

Question # 12

Three quarks make up a:

Question # 13

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

Question # 14

Half-life of radon gas is:

Question # 15

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

Question # 16

When the radioactive nucleus emits a beta particle, the proton neutron ration:

Question # 17

𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:

Question # 18

Which of the following have maximum ionization power?

Question # 19

Because of large mass when 𝑎 −paricle enters the atom or molecule it:

Question # 20

The half-life of a certain element is 3.5 days at STP. If the temperature is doubled and pressure is reduced to half then half-life of the same element will be:

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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 The particles equal in mass or greater than mass of protons are called:
A. Leptons
B. Mesons
C. Baryons
D. Quarks
3 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
4 The phenomenon of radioactivity is associated with:
A. Fission of nucleus
B. Disintegration of neutrons
C. Emission of spectral lines
D. Spontaneous disintegration of the nuclei of atoms
5 When a radioactive nucleus remits a beta particle, the proton neutron ratio:
A. Decreases
B. Increases
C. Remain same
D. None of the above
6 The example of nuclear fusion is:
A. Formation of barium and krypton from uranium
B. Formation of plutonium -235 from uranium -235
C. Formation of helium from hydrogen
D. Formation of water from hydrogen and oxygen
7 Half-life of radon gas is:
A. 1620 years
B. 3.8 days
C. 7 days
D. 11 days
8 Which of the following have maximum ionization power?
A. 𝛼 −rays
B. 𝛽 −rays
C. 𝛾 −rays
D. Same for all
9 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
10 Three quarks make up a:
A. Leptons
B. Mesons
C. Baryons
D. Quark

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