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

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:

Question # 6

Half-life of radon gas is:

Question # 7

The most penetrating radiations out of the following is that of

Question # 8

Which row is correct for fission and for fusion?

Question # 9

During a negative β-decay

Question # 10

The binding energy per nucleon is:

Question # 11

Beta particles have penetration of about:

Question # 12

A radioactive nucleus can emit:

Question # 13

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

Question # 14

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 # 15

The rate of decay radioactive substance:

Question # 16

During a negative β-decayv

Question # 17

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

Question # 18

The phenomenon of radioactivity is associated with:

Question # 19

Three quarks make up a:

Question # 20

The example of nuclear fusion is:

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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 In an 𝑎 −decay:
A. The parent and daughter nuclei have same number of protons
B. The daughter nucleus has one proton more than parent nucleus
C. The daughter nucleus has two protons less than parent nucleus
D. The daughter nucleus has two neutrons more than parent nucleus
4 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
5 Half-life of radon gas is:
A. 1620 years
B. 3.8 days
C. 7 days
D. 11 days
6 A thorium nucleus is formed when a uranium nucleus emits an 𝑎 −particles. Atomic number of thorium is :
A. 23
B. 60
C. 90
D. 70
7 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
8 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
9 The particles equal in mass or greater than mass of protons are called:
A. Leptons
B. Mesons
C. Baryons
D. Quarks
10 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

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