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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
In nuclear fission reaction, when the products are 140X and 94Sr, the number of neutrons emitted is
Question # 2
During a negative β-decayv
Question # 3
𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:
Question # 4
Because of large mass when 𝑎 −paricle enters the atom or molecule it:
Question # 5
Which row is correct for fission and for fusion?
Question # 6
A count rate 240 per minute reduces to 30 counts per min in 1 hour. The half-life of source is:
Question # 7
Half-life of radon gas is:
Question # 8
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 # 9
The fusion of hydrogen into helium is more likely to take place:
Question # 10
When the radioactive nucleus emits a beta particle, the proton neutron ration:
Question # 11
A radioactive isotope 𝟐𝟑𝟖 𝑼 decays consecutively to 𝟐𝟑𝟒 𝑼 the particles emitted are:
Question # 12
The most penetrating radiations out of the following is that of
Question # 13
The binding energy per nucleon is:
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 radioactive nucleus can emit:
Question # 16
When a radioactive nucleus emits a 𝖰 −paritcles, the mass number of the atom:
Question # 17
A radioactive substance has a half-life of 4 months. Three-fourths of the substance will decay in:
Question # 18
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 # 19
Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:
Question # 20
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:
Top Scorers Of MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test MCQ`s Test
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A ABBAS ALI 03 - Sep - 2024 03 Min 36 Sec 18/20 -
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H Hoor 09 - Aug - 2024 11 Min 15 Sec 13/20
MCAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The more readily fissionable isotope of uranium has an atomic mass of: |
A. 220
B. 230
C. 235
D. 240
|
| 2 | 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
|
| 3 | 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
|
| 4 | The rate of decay radioactive substance: |
A. Is constant
B. Decrease exponentially with time
C. Varies inversely with time
D. Decrease linearly with time
|
| 5 | A radioactive isotope 𝟐𝟑𝟖 𝑼 decays consecutively to 𝟐𝟑𝟒 𝑼 the particles emitted are: |
A. One 𝛼 and one 𝛽
B. Two 𝛼 and one 𝛽
C. e 𝛼 and two 𝛽
D. Two 𝛼 and two 𝛽
|
| 6 | 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
|
| 7 | 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
|
| 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 | The particles equal in mass or greater than mass of protons are called: |
A. Leptons
B. Mesons
C. Baryons
D. Quarks
|
| 10 | 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
|
Test Questions
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