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

Which of the following have maximum ionization power?

Question # 2

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

Question # 3

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 # 4

Three quarks make up a:

Question # 5

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

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

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

Question # 8

Beta particles have penetration of about:

Question # 9

𝑎, 𝖰 𝒂𝒏𝒅 radiations come out of radioactive substance:

Question # 10

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 # 11

Which row is correct for fission and for fusion?

Question # 12

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

Question # 13

The most penetrating radiations out of the following is that of

Question # 14

Beta particles have less ionizing power than that of alpha particles because:

Question # 15

The rate of decay radioactive substance:

Question # 16

Half-life of radon gas is:

Question # 17

In an 𝑎 −decay:

Question # 18

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

Question # 19

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

Question # 20

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:

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MCAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The mother and daughter elements with the emission of 𝖰 − 𝒓𝒂𝒚𝒔, are called:
A. Isotopes
B. Isobars
C. Isomers
D. Isodiapheres
2 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
3 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
4 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
5 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
6 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
7 The most penetrating radiations out of the following is that of
A. 𝛾-rays
B. β-rays
C. α-particles
D. X-rays
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 The more readily fissionable isotope of uranium has an atomic mass of:
A. 220
B. 230
C. 235
D. 240
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

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