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MCQ's Test For MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test
Try The MCQ's Test For MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test
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Total Questions20
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Time Allowed20
MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test
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Question # 1
The fusion of hydrogen into helium is more likely to take place:
Question # 2
A radioactive substance has a half-life of 4 months. Three-fourths of the substance will decay in:
Question # 3
A radioactive isotope 𝟐𝟑𝟖 𝑼 decays consecutively to 𝟐𝟑𝟒 𝑼 the particles emitted are:
Question # 4
When a radioactive nucleus emits a 𝖰 −paritcles, the mass number of the atom:
Question # 5
During a negative β-decay
Question # 6
The most penetrating radiations out of the following is that of
Question # 7
A radioactive nucleus can emit:
Question # 8
Three quarks make up a:
Question # 9
Beta particles have penetration of about:
Question # 10
A count rate 240 per minute reduces to 30 counts per min in 1 hour. The half-life of source is:
Question # 11
The rate of decay radioactive substance:
Question # 12
In nuclear fission reaction, when the products are 140X and 94Sr, the number of neutrons emitted is
Question # 13
The example of nuclear fusion is:
Question # 14
The mother and daughter elements with the emission of 𝖰 − 𝒓𝒂𝒚𝒔, are called:
Question # 15
𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:
Question # 16
When a radioactive nucleus remits a beta particle, the proton neutron ratio:
Question # 17
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 # 18
Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:
Question # 19
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 # 20
The number of electrons in a nucleus X of atomic number Z and mass number A is:
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MCAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | 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
|
| 3 | 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: |
A. 1.75 days
B. 3.5 days
C. 7 days
D. 14 days
|
| 4 | Which of the following have maximum ionization power? |
A. 𝛼 −rays
B. 𝛽 −rays
C. 𝛾 −rays
D. Same for all
|
| 5 | A radioactive nucleus can emit: |
A. Electron
B. 𝛼 particles
C. Positron
D. Any of these
|
| 6 | 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
|
| 7 | 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
|
| 8 | 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
|
| 9 | 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
|
| 10 | A count rate 240 per minute reduces to 30 counts per min in 1 hour. The half-life of source is: |
A. 20min
B. 60min
C. 80min
D. 90min
|
Test Questions