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 phenomenon of radioactivity is associated with:

Question # 2

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 # 3

The most penetrating radiations out of the following is that of

Question # 4

A radioactive nucleus can emit:

Question # 5

Which row is correct for fission and for fusion?

Question # 6

For atomic nucleus, the binding energy per nucleon with increase in mass number:

Question # 7

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

Question # 8

The particles equal in mass or greater than mass of protons are called:

Question # 9

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

Question # 10

Because of large mass when 𝑎 −paricle enters the atom or molecule it:

Question # 11

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

Question # 12

A thorium nucleus is formed when a uranium nucleus emits an 𝑎 −particles. Atomic number of thorium is :

Question # 13

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

Question # 14

The rate of decay radioactive substance:

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

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 # 19

Half-life of radon gas is:

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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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The example of nuclear fusion is:
A. Formation of barium and krypton from uranium
B. Formation of plutonium -235 from uranium -235
C. Formation of helium from hydrogen
D. Formation of water from hydrogen and oxygen
2 The rate of decay radioactive substance:
A. Is constant
B. Decrease exponentially with time
C. Varies inversely with time
D. Decrease linearly with time
3 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
4 The mother and daughter elements with the emission of 𝖰 − 𝒓𝒂𝒚𝒔, are called:
A. Isotopes
B. Isobars
C. Isomers
D. Isodiapheres
5 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. 𝛼 −partilces
C. neutrons
D. Protons and 𝛼 −partilces
6 When a radioactive nucleus remits a beta particle, the proton neutron ratio:
A. Decreases
B. Increases
C. Remain same
D. None of the above
7 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
8 The particles equal in mass or greater than mass of protons are called:
A. Leptons
B. Mesons
C. Baryons
D. Quarks
9 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:
A. 90, 238
B. 91, 234
C. 92, 236
D. 92, 238
10 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

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  • jaweria

    jaweria

    24 Sep 2019

    please bring some other nuclear mcqs

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