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

During a negative β-decay

Question # 2

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

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

Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:

Question # 5

The phenomenon of radioactivity is associated with:

Question # 6

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

Question # 7

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

Question # 8

Beta particles have penetration of about:

Question # 9

Which row is correct for fission and for fusion?

Question # 10

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

Question # 11

In an 𝑎 −decay:

Question # 12

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 # 13

Three quarks make up a:

Question # 14

The example of nuclear fusion is:

Question # 15

The binding energy per nucleon is:

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

The rate of decay radioactive substance:

Question # 20

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

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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:
A. Spontaneously
B. When it is put in a reactor
C. When it is heated
D. Under pressure
2 The activity of a radioactive sample is 1.6 curie and half-life is 2.5 days. Its activity after 10 days will be:
A. 0.8 Curie
B. 0.1Curie
C. 0.4 Curie
D. 0.16 Curie
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 most penetrating radiations out of the following is that of
A. 𝛾-rays
B. β-rays
C. α-particles
D. X-rays
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 Half-life of radon gas is:
A. 1620 years
B. 3.8 days
C. 7 days
D. 11 days
7 The more readily fissionable isotope of uranium has an atomic mass of:
A. 220
B. 230
C. 235
D. 240
8 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
9 If the radioactive substance reduces to 𝟏 𝟏𝟔 PHYSICS of its original mass in 40 days then its half-life is:
A. 10days
B. 20days
C. 40days
D. 4days
10 Which of the following have maximum ionization power?
A. 𝛼 −rays
B. 𝛽 −rays
C. 𝛾 −rays
D. Same for all

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