IRRSP Exam Questions with all Correct & 100% Verified
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(Just Released)
The symbol R means:
a. Rem
b. Rad
c. Roentgen
d. Radiation ✔Correct Answer-Roentgen
The acronym rad means:
a. Radiation Absorbed Dose
b. Roentgen Absorbed Dose
c. Roentgen Acquired Dose
d. Radiation At Death ✔Correct Answer-Radiation Absorbed Dose
The roentgen (R) exposure is measured in:
a. Tissue
b. Water
c. A lab
d. Air ✔Correct Answer-Air
The symbol mR means:
a. Milliroentgen
b. Microroentgen
c. Megaroentgen
d. Millirem ✔Correct Answer-Milliroentgen
One roentgen or 1 R is equal to:
a. 100 mR
b. 1000 mR
c. 0.001 mR
d. 1 mR ✔Correct Answer-1000 mR
The acronym rem stands for:
a. Radiation Equivalent Man
b. Radiation Effect Man
c. Roentgen Effect Man
d. Roentgen Equivalent Man ✔Correct Answer-Roentgen Equivalent Man
The initialism QF stands for:
,a. Quantity factor
b. Quality frequency
c. Quality factor
d. Quality effective factor ✔Correct Answer-Quality factor
The quality factor for X-rays and gamma rays is:
a. 1
b. 2
c. 10
d. 20 ✔Correct Answer-1
The quality factor for alpha(ray) particles is:
a. 1
b. 2
c. 10
d. 20 ✔Correct Answer-20
Activity of radioactive material is measured in:
a. Curies
b. Roentgens
c. Sieverts
d. Grays ✔Correct Answer-Curies
Becquerels and Curies are units of measurement of:
a. Physical size of the source
b. Gray per hour
c. Decay rate
d. Roentgen per hour ✔Correct Answer-Decay rate
Atoms that have excess energy and are unstable are known as:
a. Radioactive
b. Radioactivity
c. Balanced
d. Weighted ✔Correct Answer-Radioactive
Elementary particle units with a negative electrical charge and a mass approximately equal to
1/1840 that of a proton are:
a. Electrons
b. Protons
c. Neutrons
d. Valence shells ✔Correct Answer-Electrons
Positively charged elementary particles with a mass approximately equal to 1840 times that of
an electron, or 1 AMU, are known as:
,a. Electrons
b. Protons
c. Neutrons
d. Valence shells ✔Correct Answer-Protons
Unchanged elementary particles with a mass nearly equal to that of a proton are called:
a. Electrons
b. Protons
c. Neutrons
d. Valence shells ✔Correct Answer-Neutrons
The area known as the center of an atom is called the:
a. Electron
b. Nucleus
c. Proton
d. Neutron ✔Correct Answer-Nucleus
Any byproduct material that is encased in a capsule designed to prevent leakage or escape of
the byproduct material is a:
a. Drum
b. Pig
c. Sealed source
d. Container ✔Correct Answer-Sealed source
A tube through which the radioactive source travels when inside a radiographic exposure device
is a/an:
a. Port tube
b. Guide tube
c. S tube
d. Exit tube ✔Correct Answer-S tube
Survey meters must be calibrated at intervals not to exceed: (Answer with A, B, C, or D)
a. Three months and/or after instrument servicing except for battery changes
b. Six months and/or after instrument servicing except for battery changes
c. Annually and after instrument servicing except for battery changes
d. Daily and after instrument servicing except for battery changes ✔Correct Answer-B
A survey meter must be capable of measuring a range of: (Answer with A, B, C, or D)
a. 0 to 1000 mR/hr
b. 2 to 1000 R/hr
c. 0 to 1000 R/hr
d. 2 to 1000 mR/hr ✔Correct Answer-D
Becquerels and curies are units of measurement of:
, a. Physical size of the source
b. Activity
c. Gray per hour
d. Roentgen per hour ✔Correct Answer-Activity
An analog survey meter must be calibrated on each scale at two points approximately:
(Answer with A, B, C, or D)
a. 33% and 66% of the scale's potential
b. 25% and 75% of the scale's potential
c. Through the full range of the scale's potential
d. At the midpoint of the scale's potential ✔Correct Answer-A
The process that results in the removal of orbital electrons from atoms resulting in the
formation of ion pairs is called:
a. Excitation
b. Radioactivity
c. Decay
d. Ionization ✔Correct Answer-Ionization
The fact that gasses bombarded by ionizing radiation become conductors of electrical current
make them useful in:
a. X ray transformers
b. Cathode tubes
c. Detection equipment
d. Gasses cannot conduct electrical charges ✔Correct Answer-Detection equipment
A dosimeter must be capable of reading a range of:
(Answer with A, B, C, or D)
a. 0-100 mR
b. 0-200 mR
c. 0-500 mR
d. 0-1 R ✔Correct Answer-B
Pocket ion chambers must be capable of reading:
a. 100 mR
b. 500 mR
c. 200 mR
d. 999 mR ✔Correct Answer-200 mR
An exposure rate is measured by:
a. Survey meter
b. Dosimeter
c. Rate alarm
d. Film badge/TLD ✔Correct Answer-Survey meter
Answers |Actual Complete Update |Already Graded A+
(Just Released)
The symbol R means:
a. Rem
b. Rad
c. Roentgen
d. Radiation ✔Correct Answer-Roentgen
The acronym rad means:
a. Radiation Absorbed Dose
b. Roentgen Absorbed Dose
c. Roentgen Acquired Dose
d. Radiation At Death ✔Correct Answer-Radiation Absorbed Dose
The roentgen (R) exposure is measured in:
a. Tissue
b. Water
c. A lab
d. Air ✔Correct Answer-Air
The symbol mR means:
a. Milliroentgen
b. Microroentgen
c. Megaroentgen
d. Millirem ✔Correct Answer-Milliroentgen
One roentgen or 1 R is equal to:
a. 100 mR
b. 1000 mR
c. 0.001 mR
d. 1 mR ✔Correct Answer-1000 mR
The acronym rem stands for:
a. Radiation Equivalent Man
b. Radiation Effect Man
c. Roentgen Effect Man
d. Roentgen Equivalent Man ✔Correct Answer-Roentgen Equivalent Man
The initialism QF stands for:
,a. Quantity factor
b. Quality frequency
c. Quality factor
d. Quality effective factor ✔Correct Answer-Quality factor
The quality factor for X-rays and gamma rays is:
a. 1
b. 2
c. 10
d. 20 ✔Correct Answer-1
The quality factor for alpha(ray) particles is:
a. 1
b. 2
c. 10
d. 20 ✔Correct Answer-20
Activity of radioactive material is measured in:
a. Curies
b. Roentgens
c. Sieverts
d. Grays ✔Correct Answer-Curies
Becquerels and Curies are units of measurement of:
a. Physical size of the source
b. Gray per hour
c. Decay rate
d. Roentgen per hour ✔Correct Answer-Decay rate
Atoms that have excess energy and are unstable are known as:
a. Radioactive
b. Radioactivity
c. Balanced
d. Weighted ✔Correct Answer-Radioactive
Elementary particle units with a negative electrical charge and a mass approximately equal to
1/1840 that of a proton are:
a. Electrons
b. Protons
c. Neutrons
d. Valence shells ✔Correct Answer-Electrons
Positively charged elementary particles with a mass approximately equal to 1840 times that of
an electron, or 1 AMU, are known as:
,a. Electrons
b. Protons
c. Neutrons
d. Valence shells ✔Correct Answer-Protons
Unchanged elementary particles with a mass nearly equal to that of a proton are called:
a. Electrons
b. Protons
c. Neutrons
d. Valence shells ✔Correct Answer-Neutrons
The area known as the center of an atom is called the:
a. Electron
b. Nucleus
c. Proton
d. Neutron ✔Correct Answer-Nucleus
Any byproduct material that is encased in a capsule designed to prevent leakage or escape of
the byproduct material is a:
a. Drum
b. Pig
c. Sealed source
d. Container ✔Correct Answer-Sealed source
A tube through which the radioactive source travels when inside a radiographic exposure device
is a/an:
a. Port tube
b. Guide tube
c. S tube
d. Exit tube ✔Correct Answer-S tube
Survey meters must be calibrated at intervals not to exceed: (Answer with A, B, C, or D)
a. Three months and/or after instrument servicing except for battery changes
b. Six months and/or after instrument servicing except for battery changes
c. Annually and after instrument servicing except for battery changes
d. Daily and after instrument servicing except for battery changes ✔Correct Answer-B
A survey meter must be capable of measuring a range of: (Answer with A, B, C, or D)
a. 0 to 1000 mR/hr
b. 2 to 1000 R/hr
c. 0 to 1000 R/hr
d. 2 to 1000 mR/hr ✔Correct Answer-D
Becquerels and curies are units of measurement of:
, a. Physical size of the source
b. Activity
c. Gray per hour
d. Roentgen per hour ✔Correct Answer-Activity
An analog survey meter must be calibrated on each scale at two points approximately:
(Answer with A, B, C, or D)
a. 33% and 66% of the scale's potential
b. 25% and 75% of the scale's potential
c. Through the full range of the scale's potential
d. At the midpoint of the scale's potential ✔Correct Answer-A
The process that results in the removal of orbital electrons from atoms resulting in the
formation of ion pairs is called:
a. Excitation
b. Radioactivity
c. Decay
d. Ionization ✔Correct Answer-Ionization
The fact that gasses bombarded by ionizing radiation become conductors of electrical current
make them useful in:
a. X ray transformers
b. Cathode tubes
c. Detection equipment
d. Gasses cannot conduct electrical charges ✔Correct Answer-Detection equipment
A dosimeter must be capable of reading a range of:
(Answer with A, B, C, or D)
a. 0-100 mR
b. 0-200 mR
c. 0-500 mR
d. 0-1 R ✔Correct Answer-B
Pocket ion chambers must be capable of reading:
a. 100 mR
b. 500 mR
c. 200 mR
d. 999 mR ✔Correct Answer-200 mR
An exposure rate is measured by:
a. Survey meter
b. Dosimeter
c. Rate alarm
d. Film badge/TLD ✔Correct Answer-Survey meter
