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

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

Question # 2

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

Question # 3

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

Question # 4

During a negative β-decay

Question # 5

If the radioactive substance reduces to 𝟏 𝟏𝟔 PHYSICS of its original mass in 40 days then its half-life is:

Question # 6

The more readily fissionable isotope of uranium has an atomic mass of:

Question # 7

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

Question # 8

The example of nuclear fusion is:

Question # 9

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

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 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 # 12

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

Question # 13

A radioactive nucleus can emit:

Question # 14

Half-life of radon gas is:

Question # 15

The rate of decay radioactive substance:

Question # 16

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 :

Question # 17

When a radioactive nucleus remits a beta particle, the proton neutron ratio:

Question # 18

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 # 19

The phenomenon of radioactivity is associated with:

Question # 20

𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:

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MCAT Physics Chapter 16 Important MCQ's

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 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
3 Three quarks make up a:
A. Leptons
B. Mesons
C. Baryons
D. Quark
4 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
5 The mother and daughter elements with the emission of 𝖰 − 𝒓𝒂𝒚𝒔, are called:
A. Isotopes
B. Isobars
C. Isomers
D. Isodiapheres
6 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
7 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
8 The particles equal in mass or greater than mass of protons are called:
A. Leptons
B. Mesons
C. Baryons
D. Quarks
9 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
10 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

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