MDCAT Physics mcq test with answers for chapter 16 (Nuclear Physics)

Question # 1

The rate of decay radioactive substance:

Is constant A
Decrease exponentially with time B
Varies inversely with time C
Decrease linearly with time D

Question # 2

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

A A
W B
Z C
Y D

Question # 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 :

140days A
45days B
87days C
90days D

Question # 4

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

Increases continuously A
Remains same B
Decrease continuously C
First increases and then decreases with increase in mass number D

Question # 5

The example of nuclear fusion is:

Formation of barium and krypton from uranium A
Formation of plutonium -235 from uranium -235 B
Formation of helium from hydrogen C
Formation of water from hydrogen and oxygen D

Question # 6

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:

1.75 days A
3.5 days B
7 days C
14 days D

Question # 7

The binding energy per nucleon is:

Greater for heavy nuclei A
Least for heavy nuclei B
Greatest for light nuclei C
Greatest for medium nuclei D

Question # 8

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

increases by one A
Remains same B
Decreases by one C
Decreases by four D

Question # 9

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

At high temperature and high pressure A
At high temperature and low pressure B
At low temperature and low pressure C
At low temperature and high pressure D

Question # 10

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

Moves in zigzag path A
Moves along straight line B
Moves along circular path C
None of these D

Question # 11

The half-life of a radioactive element which has only 1//32 of its original mass left after a lapse of 60 days is:

12days A
10days B
22days C
36days D

Question # 12

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:

Protons and positrons A
𝛼 −partilces B
neutrons C
Protons and 𝛼 −partilces D

Question # 13

Which row is correct for fission and for fusion?

Produces larger nuclei A
Produces larger nuclei B
Produces smaller nuclei C
Produces smaller nuclei D

Question # 14

Half-life of radon gas is:

1620 years A
3.8 days B
7 days C
11 days D

Question # 15

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

Increases by one A
Decreases by one B
Remains the same C
Decreases by four D

Question # 16

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

10days A
20days B
40days C
4days D

Question # 17

In an 𝑎 −decay:

The parent and daughter nuclei have same number of protons A
The daughter nucleus has one proton more than parent nucleus B
The daughter nucleus has two protons less than parent nucleus C
The daughter nucleus has two neutrons more than parent nucleus D

Question # 18

Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:

Mass of the nucleus increases A
Mass of the nucleus decreases B
Charge on the nucleus increases C
Charge number decreases D

Question # 19

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

Isotopes A
Isobars B
Isomers C
Isodiapheres D

Question # 20

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

1 A
2 B
5 C
9 D

Sr.#	Question	Answer
1	The rate of decay radioactive substance:	A. Is constant B. Decrease exponentially with time C. Varies inversely with time D. Decrease linearly with time
2	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
3	If the radioactive substance reduces to 𝟏 𝟏𝟔 PHYSICS of its original mass in 40 days then its half-life is:	A. 10days B. 20days C. 40days D. 4days
4	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
5	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
6	The more readily fissionable isotope of uranium has an atomic mass of:	A. 220 B. 230 C. 235 D. 240
7	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
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:	A. 12days B. 10days C. 22days D. 36days
9	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
10	Three quarks make up a:	A. Leptons B. Mesons C. Baryons D. Quark

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

MDCAT Physics Chapter 16 MCQ Test With Answer for (Nuclear Physics)

MCQ's Test For MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test

MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test

The rate of decay radioactive substance:

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

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 :

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

The example of nuclear fusion is:

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:

The binding energy per nucleon is:

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

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

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

The half-life of a radioactive element which has only 1//32 of its original mass left after a lapse of 60 days is:

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:

Which row is correct for fission and for fusion?

Half-life of radon gas is:

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

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

In an 𝑎 −decay:

Due to emission of 𝖰+ − 𝒓𝒂𝒚𝒔:

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

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

Prepare Complete Set Wise MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test MCQs Online With Answers

Set 1

Set 2

Topic Test

Top Scorers Of MDCAT Physics Chapter 16 Nuclear Physics MCQ's Test MCQ`s Test

MCAT Physics Chapter 16 Important MCQ's

Test Questions

Is this page helpful?

Share your comments & questions here

jaweria