Page 1 of 112
RDA EXAM NEWEST 2025 ACTUAL EXAM TEST BANK|
2 VERSIONS (VERSION A & B) WITH COMPLETE 650
REAL EXAM QUESTIONS AND CORRECT VERIFIED
ANSWERS/ ALREADY GRADED A+| REGISTERED
DENTAL ASSISTANT EXAM PREP (BRAND NEW!!)
Another name for Anode is?
a. Cathode
b. Target
c. Filament
d. Ion - Correct Answer -b. Target
The distance between the crest of one photon wave and the next is
called_______________.
a. Wavelength
b. Neutron
c. Atom
d. Sonar - Correct Answer -a. Wavelength
Whether using the manual or automatic processing techniques, improper
handling can result in:
a. Overdeveloped films
b. Under fixed films
pg. 1
,Page 2 of 112
c. Film sticking together
d. Film fogging - Correct Answer -c. Film sticking together
As an x-ray operator, which of the following procedures will help reduce
your x-ray exposure?
a. Standing 6 ft away from the tubehead
b. Standing behind a barrier or outside the room
c. Never hold the tubehead during exposure
d. All the above - Correct Answer -d. All the above
Film fogging can best be detected on stored radiographic film by:
a. Using the coin test
b. Exposing an expired film
c. Exposing a complete mouth radiographic survey
d. Comparing processed films from new and current stock - Correct
Answer -a. Using the coin test
Which of the following anatomical structures would appear radiopaque
on a processed radiograph?
a. Enamel
b. Pulp
c. Sinus
d. Foramen - Correct Answer -a. Enamel
pg. 2
,Page 3 of 112
Disposal items used in the dental office include all of the following
except:
a. Gloves
b. Intravenous fluids
c. Oxygen inhalation
d. Intravenous catheter/needles - Correct Answer -c. Oxygen inhalation
The confidentiality created by the dentist, the patient and the record is?
a. Consent
b. Privilege
c. Authority
d. HIPPA - Correct Answer -b. Privilege
Dental records are legal records and must be kept for how long?
a. 30 days
b. 1 year
c. 5 years
d. 7 years - Correct Answer -c. 5 years
The use of physical or chemical means to remove inactive or destroy
pathogenic microorganisms on a surface or countertops, to the extent
they are no longer capable of transmitting infectious disease; are
pg. 3
, Page 4 of 112
restricted and regulated by the EPA according to their chemical
classification:
a. Sterilization
b. Decontamination/disinfection
c. Aseptic technique
d. Antiseptic - Correct Answer -b. Decontamination/disinfection
What absorbs more of the long wavelength radiation: not useful in
producing diagnostic imaging?
a. Aluminum filter
b. Film holder
c. Patient
d. Lead apron - Correct Answer -a. Aluminum filter
Film speed refers to the:
a. Type of the film
b. Size of the film
c. Intended use of the film
d. Sensitivity of the film - Correct Answer -d. Sensitivity of the film
Collimators limit the size and shape of the
a. DVP reaching the patient
b. X-ray beam reaching the patient
pg. 4
RDA EXAM NEWEST 2025 ACTUAL EXAM TEST BANK|
2 VERSIONS (VERSION A & B) WITH COMPLETE 650
REAL EXAM QUESTIONS AND CORRECT VERIFIED
ANSWERS/ ALREADY GRADED A+| REGISTERED
DENTAL ASSISTANT EXAM PREP (BRAND NEW!!)
Another name for Anode is?
a. Cathode
b. Target
c. Filament
d. Ion - Correct Answer -b. Target
The distance between the crest of one photon wave and the next is
called_______________.
a. Wavelength
b. Neutron
c. Atom
d. Sonar - Correct Answer -a. Wavelength
Whether using the manual or automatic processing techniques, improper
handling can result in:
a. Overdeveloped films
b. Under fixed films
pg. 1
,Page 2 of 112
c. Film sticking together
d. Film fogging - Correct Answer -c. Film sticking together
As an x-ray operator, which of the following procedures will help reduce
your x-ray exposure?
a. Standing 6 ft away from the tubehead
b. Standing behind a barrier or outside the room
c. Never hold the tubehead during exposure
d. All the above - Correct Answer -d. All the above
Film fogging can best be detected on stored radiographic film by:
a. Using the coin test
b. Exposing an expired film
c. Exposing a complete mouth radiographic survey
d. Comparing processed films from new and current stock - Correct
Answer -a. Using the coin test
Which of the following anatomical structures would appear radiopaque
on a processed radiograph?
a. Enamel
b. Pulp
c. Sinus
d. Foramen - Correct Answer -a. Enamel
pg. 2
,Page 3 of 112
Disposal items used in the dental office include all of the following
except:
a. Gloves
b. Intravenous fluids
c. Oxygen inhalation
d. Intravenous catheter/needles - Correct Answer -c. Oxygen inhalation
The confidentiality created by the dentist, the patient and the record is?
a. Consent
b. Privilege
c. Authority
d. HIPPA - Correct Answer -b. Privilege
Dental records are legal records and must be kept for how long?
a. 30 days
b. 1 year
c. 5 years
d. 7 years - Correct Answer -c. 5 years
The use of physical or chemical means to remove inactive or destroy
pathogenic microorganisms on a surface or countertops, to the extent
they are no longer capable of transmitting infectious disease; are
pg. 3
, Page 4 of 112
restricted and regulated by the EPA according to their chemical
classification:
a. Sterilization
b. Decontamination/disinfection
c. Aseptic technique
d. Antiseptic - Correct Answer -b. Decontamination/disinfection
What absorbs more of the long wavelength radiation: not useful in
producing diagnostic imaging?
a. Aluminum filter
b. Film holder
c. Patient
d. Lead apron - Correct Answer -a. Aluminum filter
Film speed refers to the:
a. Type of the film
b. Size of the film
c. Intended use of the film
d. Sensitivity of the film - Correct Answer -d. Sensitivity of the film
Collimators limit the size and shape of the
a. DVP reaching the patient
b. X-ray beam reaching the patient
pg. 4
