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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 particles equal in mass or greater than mass of protons are called:
Question # 2
The example of nuclear fusion is:
Question # 3
During a negative Ξ²-decay
Question # 4
During a negative Ξ²-decayv
Question # 5
Half-life of radon gas is:
Question # 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:
Question # 7
The number of electrons in a nucleus X of atomic number Z and mass number A is:
Question # 8
Because of large mass when π βparicle enters the atom or molecule it:
Question # 9
Three quarks make up a:
Question # 10
For atomic nucleus, the binding energy per nucleon with increase in mass number:
Question # 11
Due to emission of π°+ β ππππ:
Question # 12
A radioactive isotope πππ πΌ decays consecutively to πππ πΌ the particles emitted are:
Question # 13
The phenomenon of radioactivity is associated with:
Question # 14
When the radioactive nucleus emits a beta particle, the proton neutron ration:
Question # 15
When a radioactive nucleus emits a π° βparitcles, the mass number of the atom:
Question # 16
In an π βdecay:
Question # 17
A radioactive nucleus can emit:
Question # 18
The fusion of hydrogen into helium is more likely to take place:
Question # 19
When a radioactive nucleus remits a beta particle, the proton neutron ratio:
Question # 20
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 :
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| Sr.# | Question | Answer |
|---|---|---|
| 1 | The half-life of a radioactive element which has only 1//32 of its original mass left after a lapse of 60 days is: |
A. 12days
B. 10days
C. 22days
D. 36days
|
| 2 | During a negative Ξ²-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
|
| 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 particles equal in mass or greater than mass of protons are called: |
A. Leptons
B. Mesons
C. Baryons
D. Quarks
|
| 5 | When the radioactive nucleus emits a beta particle, the proton neutron ration: |
A. increases by one
B. Remains same
C. Decreases by one
D. Decreases by four
|
| 6 | A thorium nucleus is formed when a uranium nucleus emits an π βparticles. Atomic number of thorium is : |
A. 23
B. 60
C. 90
D. 70
|
| 7 | The mother and daughter elements with the emission of π° β ππππ, are called: |
A. Isotopes
B. Isobars
C. Isomers
D. Isodiapheres
|
| 8 | When a radioactive nucleus emits a π° βparitcles, the mass number of the atom: |
A. Increases by one
B. Decreases by one
C. Remains the same
D. Decreases by four
|
| 9 | 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
|
| 10 | For atomic nucleus, the binding energy per nucleon with increase in mass number: |
A. Increases continuously
B. Remains same
C. Decrease continuously
D. First increases and then decreases with increase in mass number
|
| 11 | 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
|
| 12 | 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
|
| 13 | 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
|
| 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: |
A. Protons and positrons
B. πΌ βpartilces
C. neutrons
D. Protons and πΌ βpartilces
|
| 15 | Half-life of radon gas is: |
A. 1620 years
B. 3.8 days
C. 7 days
D. 11 days
|
| 16 | π, π° πππ radiations come out of radioactive substance: |
A. Spontaneously
B. When it is put in a reactor
C. When it is heated
D. Under pressure
|
| 17 | During a negative Ξ²-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
|
| 18 | 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
|
| 19 | 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
