RDA WRITTEN EXAM NEWEST 2026 ACTUAL EXAM
BANK COMPLETE 550 QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW VERSION!!
(CALIFORNIA)
The majority of the spray produced by dental hand pieces consists of - CORRECT
ANSWER ✔✔- saliva
which of the following viral infections can be prevented through immunization? -
CORRECT ANSWER ✔✔- Hepatitis B
According to the Occupational Safety and Health Administration (OSHAP), a
bloodborne pathogens training program should include a general explanation of -
CORRECT ANSWER ✔✔- the modes of disease transmission
Routine hand washing removes - CORRECT ANSWER ✔✔- most of the transient
microbes and some of the resident microbes
Which of the following greatly reduces or eliminates biofilm in the dental unit
water system? - CORRECT ANSWER ✔✔- properly using chemical treatments
which of the following modes of disease transmission best describes a human
bite? - CORRECT ANSWER ✔✔- parenteral
1|Page
,the primary reason a surgical face mask must be used during a dental procedure is
to - CORRECT ANSWER ✔✔- protect the DHCP from exposure to spatter
Instrument cassettes should be wrapped - CORRECT ANSWER ✔✔- after cleaning
and before sterilization
Used radiograph fixer solution is usually considered - CORRECT ANSWER ✔✔-
hazardous waste
Which party is responsible for ensuring a Material Safety Data Sheet is available in
the work place for each hazardous material? - CORRECT ANSWER ✔✔- Employer
Which of the following statements most accurately defines engineering controls?
- CORRECT ANSWER ✔✔- Materials and devices that prevent employees exposure
to hazardous or infectious substances
When using the air water syringe during dental treatment which of the following
personal protective equipment are recommended by the CDC? - CORRECT
ANSWER ✔✔- gloves, mask, gown, and eye protection
According to the Center for Disease Control and Prevention, patient-care items
that penetrate soft tissue are categorized as - CORRECT ANSWER ✔✔- critical
The purpose of a holding solution is to - CORRECT ANSWER ✔✔- prevent
hardening of debris and body fluids on instruments
2|Page
,Which barrier should be removed before temporarily leaving a patient to retrieve
supplies? - CORRECT ANSWER ✔✔- gloves
The majority of organisms that make up dental unit waterline biofilm consists of -
CORRECT ANSWER ✔✔- water bacteria
Material Safety Data Sheet (MSDS) are required by OSHA'S - CORRECT ANSWER
✔✔- Hazardous Communication Standard
Besides alcohol, which of the following is a common antimicrobial agent found in
hand hygiene products? - CORRECT ANSWER ✔✔- Chlorohexidine
The accessibility of the exposure control plan for employees is the responsibility
of the - CORRECT ANSWER ✔✔- employer
High- level disinfectants should be used - CORRECT ANSWER ✔✔- according to
the manufacturer's directions
Exposure of dental heathcare personnel to nitrous oxide gases can be reduced by
- CORRECT ANSWER ✔✔- using a scavenger system on the nitrous oxide
equipment
When putting on personal protective equipment, which barrier should be put on
last, just before patient care begins? - CORRECT ANSWER ✔✔- gloves
3|Page
, To prepare for sterilization, the high-speed hand piece and reusable air-water
syringe tip should be flushed with water - CORRECT ANSWER ✔✔- after each
patient
Who is responsible for the evaluation of hazardous chemicals? - CORRECT
ANSWER ✔✔- chemicals manufacturers and importers
During normal use, which of the following is the most likely hazard for a dentist
using a curing light? - CORRECT ANSWER ✔✔- eye exposure to the light
An exposure plan must be updated - CORRECT ANSWER ✔✔- annually and when
new or modified tasks are introduced
Wearing a punctured gloves during patient care may result in which type of
microbial contact? - CORRECT ANSWER ✔✔- direct
Work practice controls include the use of a - CORRECT ANSWER ✔✔- one-handed
recapping technique
Heat sterilization of extracted teeth may result in - CORRECT ANSWER ✔✔- the
vaporization of mercury, presenting a health hazard.
A person with a latent tuberculosis infection will - CORRECT ANSWER ✔✔- have a
positive skin test and no symptoms of active tuberculosis
Which is the minimum temperature a steam sterilizer should reach to achieve
sterilization? - CORRECT ANSWER ✔✔- 121 degrees C
4|Page
BANK COMPLETE 550 QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW VERSION!!
(CALIFORNIA)
The majority of the spray produced by dental hand pieces consists of - CORRECT
ANSWER ✔✔- saliva
which of the following viral infections can be prevented through immunization? -
CORRECT ANSWER ✔✔- Hepatitis B
According to the Occupational Safety and Health Administration (OSHAP), a
bloodborne pathogens training program should include a general explanation of -
CORRECT ANSWER ✔✔- the modes of disease transmission
Routine hand washing removes - CORRECT ANSWER ✔✔- most of the transient
microbes and some of the resident microbes
Which of the following greatly reduces or eliminates biofilm in the dental unit
water system? - CORRECT ANSWER ✔✔- properly using chemical treatments
which of the following modes of disease transmission best describes a human
bite? - CORRECT ANSWER ✔✔- parenteral
1|Page
,the primary reason a surgical face mask must be used during a dental procedure is
to - CORRECT ANSWER ✔✔- protect the DHCP from exposure to spatter
Instrument cassettes should be wrapped - CORRECT ANSWER ✔✔- after cleaning
and before sterilization
Used radiograph fixer solution is usually considered - CORRECT ANSWER ✔✔-
hazardous waste
Which party is responsible for ensuring a Material Safety Data Sheet is available in
the work place for each hazardous material? - CORRECT ANSWER ✔✔- Employer
Which of the following statements most accurately defines engineering controls?
- CORRECT ANSWER ✔✔- Materials and devices that prevent employees exposure
to hazardous or infectious substances
When using the air water syringe during dental treatment which of the following
personal protective equipment are recommended by the CDC? - CORRECT
ANSWER ✔✔- gloves, mask, gown, and eye protection
According to the Center for Disease Control and Prevention, patient-care items
that penetrate soft tissue are categorized as - CORRECT ANSWER ✔✔- critical
The purpose of a holding solution is to - CORRECT ANSWER ✔✔- prevent
hardening of debris and body fluids on instruments
2|Page
,Which barrier should be removed before temporarily leaving a patient to retrieve
supplies? - CORRECT ANSWER ✔✔- gloves
The majority of organisms that make up dental unit waterline biofilm consists of -
CORRECT ANSWER ✔✔- water bacteria
Material Safety Data Sheet (MSDS) are required by OSHA'S - CORRECT ANSWER
✔✔- Hazardous Communication Standard
Besides alcohol, which of the following is a common antimicrobial agent found in
hand hygiene products? - CORRECT ANSWER ✔✔- Chlorohexidine
The accessibility of the exposure control plan for employees is the responsibility
of the - CORRECT ANSWER ✔✔- employer
High- level disinfectants should be used - CORRECT ANSWER ✔✔- according to
the manufacturer's directions
Exposure of dental heathcare personnel to nitrous oxide gases can be reduced by
- CORRECT ANSWER ✔✔- using a scavenger system on the nitrous oxide
equipment
When putting on personal protective equipment, which barrier should be put on
last, just before patient care begins? - CORRECT ANSWER ✔✔- gloves
3|Page
, To prepare for sterilization, the high-speed hand piece and reusable air-water
syringe tip should be flushed with water - CORRECT ANSWER ✔✔- after each
patient
Who is responsible for the evaluation of hazardous chemicals? - CORRECT
ANSWER ✔✔- chemicals manufacturers and importers
During normal use, which of the following is the most likely hazard for a dentist
using a curing light? - CORRECT ANSWER ✔✔- eye exposure to the light
An exposure plan must be updated - CORRECT ANSWER ✔✔- annually and when
new or modified tasks are introduced
Wearing a punctured gloves during patient care may result in which type of
microbial contact? - CORRECT ANSWER ✔✔- direct
Work practice controls include the use of a - CORRECT ANSWER ✔✔- one-handed
recapping technique
Heat sterilization of extracted teeth may result in - CORRECT ANSWER ✔✔- the
vaporization of mercury, presenting a health hazard.
A person with a latent tuberculosis infection will - CORRECT ANSWER ✔✔- have a
positive skin test and no symptoms of active tuberculosis
Which is the minimum temperature a steam sterilizer should reach to achieve
sterilization? - CORRECT ANSWER ✔✔- 121 degrees C
4|Page
