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

Question # 2

A radioactive isotope 𝟐𝟑𝟖 𝑼 decays consecutively to 𝟐𝟑𝟒 𝑼 the particles emitted are:

Question # 3

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

Question # 4

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 # 5

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 # 6

The example of nuclear fusion is:

Question # 7

The phenomenon of radioactivity is associated with:

Question # 8

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

Question # 9

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

Question # 10

The rate of decay radioactive substance:

Question # 11

Which of the following have maximum ionization power?

Question # 12

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

Question # 13

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 # 14

𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:

Question # 15

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 # 16

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

Question # 17

During a negative β-decay

Question # 18

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

Question # 19

In an 𝑎 −decay:

Question # 20

Half-life of radon gas is:

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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The most penetrating radiations out of the following is that of
A. 𝛾-rays
B. β-rays
C. α-particles
D. X-rays
2 Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:
A. Mass of the nucleus increases
B. Mass of the nucleus decreases
C. Charge on the nucleus increases
D. Charge number decreases
3 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
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 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
7 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
8 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
9 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
10 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

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  • jaweria

    jaweria

    24 Sep 2019

    please bring some other nuclear mcqs

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