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

In an 𝑎 −decay:

Question # 2

Three quarks make up a:

Question # 3

The most penetrating radiations out of the following is that of

Question # 4

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

Question # 5

Which row is correct for fission and for fusion?

Question # 6

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

Question # 7

The activity of a radioactive sample is 1.6 curie and half-life is 2.5 days. Its activity after 10 days will be:

Question # 8

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

Question # 9

During a negative β-decay

Question # 10

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

Question # 11

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

Question # 12

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 # 13

Half-life of radon gas is:

Question # 14

𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:

Question # 15

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

Question # 16

The example of nuclear fusion is:

Question # 17

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:

Question # 18

Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:

Question # 19

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

Question # 20

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

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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 Three quarks make up a:
A. Leptons
B. Mesons
C. Baryons
D. Quark
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 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
4 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
5 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
6 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
7 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
8 Because of large mass when 𝑎 −paricle enters the atom or molecule it:
A. Moves in zigzag path
B. Moves along straight line
C. Moves along circular path
D. None of these
9 Beta particles have less ionizing power than that of alpha particles because:
A. Their smaller energy
B. Their smaller mass
C. Their smaller density
D. Their smaller charge
10 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

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