Practice Radioactivity Multiple Choice Questions with Answers Quiz-1

Q.1.

What is an isotope

An atom with the same number of neutrons different number of protons
An atom that has lost or gained an electron
An atom with the same number of protons, different number of neutrons
An atom with the same number of electrons and different neutrons

Q.2.

What is nuclear fission?

Big nucleus splits to small nuclei
Small nuclei fuse into a bigger nucleus
Stars
Making compounds

Q.3.

What is a beneficial aspect of nuclear fission?

The ability to absorb energy
The ability to release tremendous amounts of energy
The ability to produce more energy than nuclear fusion
There are no beneficial aspects of nuclear fission

Q.4.

How many neutrons does uranium-have?

238
92
146
143

Q.5.

Atoms of each element have a unique number of __________ .

protons
electrons
neutrons
isotopes

Q.6.

What makes something radioactive?

elements with an atomic number above 81
an unstable nucleus
contaminated sewage
It decays over time

Q.7.

What would two different isotopes of an atom have in common?

Atomic weight
Number of protons
Number of neutrons
Atomic mass

Q.8.

The centre of an atom is called

the electron
the proton
the nucleus
the neutron

Q.9.

Which isotope of carbon is radioactive?

carbon-12
carbon-13
carbon-14
carbon-13 and carbon-14

Q.10.

Radioactivity is a nuclear phenomenon

True
False

Q.11.

Which particles make up the nucleus of an atom?

protons and neutrons
electrons and protons
electrons, protons, and neutrons
electrons and neutrons

Q.12.

Which particles are found in the nucleus of an atom?

neutrons and protons only
neutrons only
protons and electrons only
protons, electrons and neutrons

Q.13.

Fusion occurs when nuclei

split
combine
mutate
gain energy

Q.14.

Which particles are negatively charged

alpha
beta
gamma

Q.15.

Which is an alpha particle

Fast moving electron
4 2 He nuclei
fast moving positron
EM wave

Q.16.

What is the symbol for an alpha particle?

42He
0-1e
0+1 e
10n

Q.17.

How are gamma rays different from beta particles?

Beta particles cannot penetrate people's skin; gamma rays can
Beta particles are extremely dangerous, gamma rays are less so
Gamma rays are extremely dangerous; beta particles are less so
Beta particles are safe for humans to ingest; gamma rays are not

Q.18.

Two isotopes of the same element have

the same number of protons but different numbers of neutrons
the same number of protons but different numbers of electrons
the same number of neutrons but different numbers of protons
the same number of electrons but different numbers of protons

Q.19.

Gamma radiation has

the mass of an electron and a charge of +1
the mass of an electron and a charge of -1
a mass of 4 AMU and a charge of 2+
no mass or charge

Q.20.

What stops beta radiation

Paper
Air
Glass
Aluminium 3mm or thicker

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