Welcome to the Radioactivity and Nuclear Reactions MCQs with Answers. In this post, we are sharing Radioactivity and Nuclear Reactions Multiple Choice Questions and Answers in Everyday Science section for various competitive exams in Pakistan. Each question offers a chance to enhance your knowledge regarding Radioactivity and Nuclear Reactions online MCQs Test.
Radioactivity is the spontaneous emission of:
a) Protons
b) Electrons
c) Neutrons
d) Nuclear radiation
The unit used to measure radioactivity is:
a) Joule
b) Volt
c) Becquerel
d) Pascal
What is the primary source of Earth’s internal heat?
a) Nuclear fission
b) Nuclear fusion
c) Radioactive decay
d) Solar radiation
Which type of radiation has the highest penetrating power?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons
The process in which an unstable atomic nucleus spontaneously decays and emits radiation is called:
a) Nuclear fusion
b) Nuclear fission
c) Radioactive decay
d) Nuclear transmutation
Which type of radiation consists of high-energy electrons?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons
What is the charge of an alpha particle?
a) Positive
b) Negative
c) Neutral
d) Variable
Which type of radiation consists of helium nuclei?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons
The process in which two atomic nuclei combine to form a heavier nucleus is called:
a) Nuclear fusion
b) Nuclear fission
c) Radioactive decay
d) Nuclear transmutation
The process in which a heavy atomic nucleus splits into two or more lighter nuclei is called:
a) Nuclear fusion
b) Nuclear fission
c) Radioactive decay
d) Nuclear transmutation
What is the primary source of energy in the Sun?
a) Nuclear fusion
b) Nuclear fission
c) Radioactive decay
d) Solar radiation
Which type of radiation has the greatest ionizing power?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons
What is the half-life of a radioactive substance?
a) The time it takes for the substance to decay completely
b) The time it takes for half of the substance to decay
c) The time it takes for the substance to become stable
d) The time it takes for the substance to emit radiation
Which type of radiation can be stopped by a sheet of paper?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons
Which type of radiation is electrically neutral?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons
The process of converting one element into another by changing the number of protons in the nucleus is called:
a) Nuclear fusion
b) Nuclear fission
c) Radioactive decay
d) Nuclear transmutation
Which type of radiation has the lowest penetrating power?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons
What is the mass number of an alpha particle?
a) 0
b) 1
c) 2
d) 4
Which type of radiation can be stopped by a few centimeters of aluminum?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons
The process in which an unstable atomic nucleus spontaneously emits an alpha particle is an example of:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
Which type of radiation has the ability to penetrate through most materials?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons
The process in which a neutron in an atomic nucleus spontaneously transforms into a proton and emits an electron is called:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the charge of a beta particle?
a) Positive
b) Negative
c) Neutral
d) Variable
The process in which an unstable atomic nucleus emits a high-energy photon is called:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
Which type of radiation can be stopped by a few millimeters of aluminum?
a) Alpha particles
b) Beta particles
c) Gamma rays
d) Neutrons
What is the symbol used to represent a beta particle?
a) α
b) β
c) γ
d) δ
The process in which a neutron in an atomic nucleus spontaneously transforms into a proton and emits an electron antineutrino is called:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the symbol used to represent a gamma ray?
a) α
b) β
c) γ
d) δ
The process in which a neutron in an atomic nucleus spontaneously transforms into a proton and emits a neutrino is called:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the symbol used to represent a neutron?
a) α
b) β
c) γ
d) n
The process in which an unstable atomic nucleus emits a positron is an example of:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the charge of a positron?
a) Positive
b) Negative
c) Neutral
d) Variable
The process in which an unstable atomic nucleus absorbs an electron from its surroundings is called:
a) Electron capture
b) Alpha decay
c) Beta decay
d) Gamma decay
What is the symbol used to represent an electron?
a) α
b) β
c) e
d) δ
The process in which an unstable atomic nucleus emits a neutron is an example of:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the symbol used to represent an alpha particle?
a) α
b) β
c) γ
d) δ
The process in which an unstable atomic nucleus undergoes a rearrangement of its nucleons without emitting any radiation is called:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the symbol used to represent an antineutrino?
a) α
b) β
c) γ
d) ν with a bar on top
The process in which an unstable atomic nucleus absorbs a proton from its surroundings is called:
a) Proton capture
b) Alpha decay
c) Beta decay
d) Gamma decay
What is the symbol used to represent a neutrino?
a) α
b) β
c) γ
d) ν
The process in which an unstable atomic nucleus absorbs a neutron from its surroundings is called:
a) Neutron capture
b) Alpha decay
c) Beta decay
d) Gamma decay
What is the symbol used to represent an antineutrino?
a) α
b) β
c) γ
d) ν with a bar on top
The process in which an unstable atomic nucleus undergoes a spontaneous emission of an alpha particle is an example of:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the symbol used to represent an antineutrino?
a) α
b) β
c) γ
d) ν with a bar on top
The process in which an unstable atomic nucleus undergoes a spontaneous emission of a beta particle is an example of:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the symbol used to represent a neutrino?
a) α
b) β
c) γ
d) ν
The process in which an unstable atomic nucleus undergoes a spontaneous emission of a gamma ray is an example of:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the symbol used to represent a positron?
a) α
b) β
c) γ
d) e with a plus sign on top
The process in which an unstable atomic nucleus undergoes a spontaneous emission of a neutron is an example of:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the symbol used to represent an electron?
a) α
b) β
c) e
d) δ
The process in which an unstable atomic nucleus absorbs an electron from its surroundings is called:
a) Electron capture
b) Alpha decay
c) Beta decay
d) Gamma decay
What is the symbol used to represent an electron?
a) α
b) β
c) e
d) δ
The process in which an unstable atomic nucleus absorbs a proton from its surroundings is called:
a) Proton capture
b) Alpha decay
c) Beta decay
d) Gamma decay
What is the symbol used to represent an electron antineutrino?
a) α
b) β
c) γ
d) νe with a bar on top
The process in which an unstable atomic nucleus absorbs a neutron from its surroundings is called:
a) Neutron capture
b) Alpha decay
c) Beta decay
d) Gamma decay
What is the symbol used to represent a neutrino?
a) α
b) β
c) γ
d) ν
The process in which an unstable atomic nucleus undergoes a spontaneous emission of an alpha particle is an example of:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
What is the symbol used to represent a neutrino?
a) α
b) β
c) γ
d) ν
The process in which an unstable atomic nucleus undergoes a spontaneous emission of a beta particle is an example of:
a) Alpha decay
b) Beta decay
c) Gamma decay
d) Neutron decay
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