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

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

Question # 2

In an 𝑎 −decay:

Question # 3

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

Question # 4

Nuclear fission experiments show that the neutrons the uranium nuclei into two fragment of about the same size. This process is accompanied by the emission of several:

Question # 5

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

Question # 6

Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:

Question # 7

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

Question # 8

The rate of decay radioactive substance:

Question # 9

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

Question # 10

Three quarks make up a:

Question # 11

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

Question # 12

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

Question # 13

The most penetrating radiations out of the following is that of

Question # 14

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 # 15

A count rate 240 per minute reduces to 30 counts per min in 1 hour. The half-life of source is:

Question # 16

If the radioactive substance reduces to 𝟏 𝟏𝟔 PHYSICS of its original mass in 40 days then its half-life is:

Question # 17

During a negative β-decay

Question # 18

Half-life of radon gas is:

Question # 19

During a negative β-decayv

Question # 20

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

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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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 :
A. 140days
B. 45days
C. 87days
D. 90days
2 The number of electrons in a nucleus X of atomic number Z and mass number A is:
A. A
B. W
C. Z
D. Y
3 In nuclear fission reaction, when the products are 140X and 94Sr, the number of neutrons emitted is
A. 1
B. 2
C. 5
D. 9
4 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
5 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
6 Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:
A. Mass of the nucleus increases
B. Mass of the nucleus decreases
C. Charge on the nucleus increases
D. Charge number decreases
7 The binding energy per nucleon is:
A. Greater for heavy nuclei
B. Least for heavy nuclei
C. Greatest for light nuclei
D. Greatest for medium nuclei
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 The rate of decay radioactive substance:
A. Is constant
B. Decrease exponentially with time
C. Varies inversely with time
D. Decrease linearly with time
10 The fusion of hydrogen into helium is more likely to take place:
A. At high temperature and high pressure
B. At high temperature and low pressure
C. At low temperature and low pressure
D. At low temperature and high pressure

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