16 Infection Control & Safety Practice Questions & Answers

1. 1. What is the correct definition of "disinfecting" as used on the state board exam?

   • A.A process that simply reduces the number of germs to a level considered safe by the public
   • B.A process that uses chemicals to destroy most pathogens (but not necessarily bacterial spores) on hard, non-porous surfaces✓ Answer
   • C.A process that destroys all microbial life, including bacterial spores
   • D.A process that removes visible dirt and debris from a surface with soap and water

   Disinfection is a mid-level control that uses EPA-registered chemicals to destroy most pathogens on hard, non-porous surfaces; it does not reliably kill bacterial spores. Cleaning (option B) only removes debris, sterilizing (option C) destroys all microbial life including spores, and sanitizing (option D) merely reduces germs to a safe level.

   Source: NIC Infection Control content outline; CDC Disinfection & Sterilization definitions (disinfection destroys most pathogens but not all spores)Report a problem with this question

2. 2. Before an implement can be disinfected, what step must always be performed first?

   • A.The implement must be soaked in 70% alcohol for one hour
   • B.The implement must be cleaned to remove all visible debris✓ Answer
   • C.The implement must be sterilized in an autoclave
   • D.The implement must be rinsed only in warm running water

   Disinfectants cannot penetrate dirt, oil, or debris, so an implement must first be cleaned with soap and water to remove visible matter; otherwise the disinfectant contacts the debris instead of the surface and fails. Cleaning always precedes disinfection.

   Source: NIC Infection Control content outline; EPA disinfectant label use directions (surface must be pre-cleaned)Report a problem with this question

3. 3. A disinfectant used on salon implements must be EPA-registered and labeled as effective against which combination of organisms?

   • A.Only bactericidal (kills bacteria only)
   • B.Only fungicidal (kills fungus only)
   • C.Bactericidal, virucidal, and fungicidal (broad-spectrum, hospital-grade)✓ Answer
   • D.Effective against head lice and dust mites

   State rules require an EPA-registered, hospital-grade disinfectant that is bactericidal, virucidal, and fungicidal so it covers the range of pathogens encountered in a salon. A product that kills only one class of organism leaves clients exposed to the others.

   Source: NIC Infection Control content outline; EPA-registered hospital disinfectant label claims (bactericidal/virucidal/fungicidal)Report a problem with this question

4. 4. "Contact time" (dwell time) for a disinfectant refers to which of the following?

   • A.How long the disinfectant can be stored before it expires
   • B.The length of time the surface must stay visibly wet with the disinfectant to kill the listed pathogens, as stated on the label✓ Answer
   • C.The time it takes the disinfectant to dry on the surface
   • D.The number of minutes you may reuse the same solution before mixing more

   Contact time is the manufacturer-specified duration the surface must remain continuously wet with the disinfectant for the product to kill the pathogens on its label. If the surface dries before that time elapses, disinfection is not achieved and the item must be re-wetted.

   Source: EPA disinfectant label directions for use (required wet contact/dwell time)Report a problem with this question

5. 5. How should you determine the correct dilution ratio and contact time for a salon disinfectant?

   • A.Make the solution as concentrated as possible so it works faster
   • B.Use whatever ratio the previous technician left in the jar
   • C.Guess based on how dirty the implements look
   • D.Follow the manufacturer's directions printed on the product label exactly✓ Answer

   The EPA-registered label is a legally binding document, so the mixing ratio and contact time must follow the manufacturer's directions exactly. Over-concentrating wastes product and can damage tools or skin, while under-concentrating or guessing fails to disinfect.

   Source: EPA/FIFRA label-use requirement ("the label is the law"); NIC Infection Control content outlineReport a problem with this question

6. 6. After a whirlpool/circulating pedicure foot spa is used, how must it be disinfected between clients?

   • A.Spray the basin with fragrance to mask odors
   • B.Drain the water and let the empty basin air-dry
   • C.Wipe the outside with a paper towel and move to the next client
   • D.Clean it, then fill with water and EPA-registered disinfectant and circulate the solution for the full label time (commonly at least 10 minutes)✓ Answer

   Circulating foot spas trap debris and microbes in their piping, so between every client you must remove debris, clean the basin, then fill with water plus an EPA-registered hospital disinfectant and run the unit so the solution circulates for the label-specified time (commonly a minimum of 10 minutes). This flushes and disinfects the internal lines where pathogens like Mycobacterium can grow.

   Source: EPA "Recommended Cleaning and Disinfection Procedures for Foot Spa Basins in Salons" (circulate disinfectant ≥10 min per label between clients)Report a problem with this question

7. 7. Which of the following is a single-use (disposable) item that must be thrown away after one client and never reused?

   • A.A wooden pusher stick, disposable nail file/buffer, or orangewood stick✓ Answer
   • B.Glass electrode of an electric file (bit that can be disinfected)
   • C.A stainless-steel cuticle nipper
   • D.A metal pusher

   Porous items such as wooden sticks and disposable files/buffers absorb moisture and cannot be disinfected, so they are single-use and must be discarded after one client. Non-porous metal implements (nippers, metal pushers, disinfectable bits) can be cleaned and disinfected for reuse.

   Source: NIC Infection Control content outline (porous/single-use items are disposable; non-porous multi-use items are cleaned and disinfected)Report a problem with this question

8. 8. If a client is accidentally cut and bleeds during a service, what is the correct immediate procedure?

   • A.Keep working and wipe the blood with the same towel you have been using
   • B.Put on gloves, stop the service, clean the wound and apply an antiseptic/dressing, then clean and disinfect any tools and surfaces contaminated with blood✓ Answer
   • C.Reuse the blood-contaminated implement on the next client after only wiping it dry
   • D.Rinse the client's finger under the tap and continue immediately with bare hands

   Blood may carry bloodborne pathogens, so you must don gloves (barrier protection), stop the service, care for the wound with an antiseptic and dressing, and then clean and disinfect every implement and surface the blood touched before continuing. Any single-use item exposed to blood must be discarded.

   Source: OSHA Bloodborne Pathogens Standard 29 CFR 1910.1030; NIC Infection Control blood-spill/exposure procedureReport a problem with this question

9. 9. Under Universal (Standard) Precautions, how should a technician treat every client's blood or body fluids?

   • A.As safe unless the client tells you they have an infection
   • B.As if they are potentially infectious, regardless of the client's known health status✓ Answer
   • C.As infectious only if the client looks ill
   • D.As a concern only when serving new clients, not regulars

   Universal Precautions require treating all human blood and body fluids as if they are infectious, because a person can carry a bloodborne pathogen without any visible signs and may not know or disclose it. This assumption protects both the technician and other clients.

   Source: CDC/OSHA Universal (Standard) Precautions; OSHA 29 CFR 1910.1030Report a problem with this question

10. 10. A Safety Data Sheet (SDS) for a salon chemical primarily provides information about what?

    • A.The client appointment schedule for the day
    • B.The product's hazards, safe handling and storage, ingredients, first aid, and emergency/spill procedures✓ Answer
    • C.Marketing claims and customer reviews of the product
    • D.The retail price and profit margin of the product

    An SDS, required under OSHA's Hazard Communication Standard, documents a product's hazards, safe handling and storage, ingredients, first-aid measures, and spill/emergency response. Salons must keep an SDS available for every professional chemical product so workers know how to use it safely and respond to exposures.

    Source: OSHA Hazard Communication Standard 29 CFR 1910.1200 (Safety Data Sheets, 16 required sections)Report a problem with this question

11. 11. Why is proper ventilation especially important when working with nail products such as monomer liquid, acetone, and dust from filing?

    • A.It keeps the polish from drying too quickly
    • B.It removes vapors and airborne dust so the technician does not inhale harmful concentrations over time✓ Answer
    • C.It makes the salon smell like fragrance for the client's comfort only
    • D.It is only needed to keep the technician warm

    Nail chemicals release vapors and generate fine dust that accumulate in the air of a salon; adequate ventilation (and local exhaust or dust collection) removes these so the technician's cumulative inhalation stays below harmful levels, reducing respiratory and sensitization risks over a career.

    Source: OSHA/NIOSH nail salon ventilation guidance; NIC Safety content outlineReport a problem with this question

12. 12. What is the best way to store a bottle of acetone or other flammable salon liquid?

    • A.In an unlabeled cup at the workstation
    • B.Open on a sunny windowsill so it stays warm
    • C.Next to the hot towel warmer for convenience
    • D.Tightly capped, in a cool, well-ventilated area away from heat, sparks, and open flame✓ Answer

    Acetone is volatile and flammable, so its vapors can ignite from heat, sparks, or flame. Storing it tightly capped in a cool, ventilated area away from ignition sources prevents vapor buildup and fire, and keeping it in its labeled container prevents dangerous mix-ups.

    Source: OSHA Hazard Communication/flammable liquid storage; product SDS handling and storage sectionReport a problem with this question

13. 13. Which hygiene practice is required of a licensee before providing a service to each client?

    • A.Wash and dry hands thoroughly (and have the client do so as well) before beginning✓ Answer
    • B.Wash hands only if they look visibly dirty
    • C.Rely on hand lotion instead of washing
    • D.Only wash hands at the start and end of the workday

    Handwashing is the single most effective way to prevent the spread of infection, so the licensee must wash and dry their hands (and have the client wash too) before every service. This removes transient microorganisms picked up between clients that a service could otherwise transfer.

    Source: NIC Infection Control content outline; CDC hand hygiene guidance (handwashing between clients)Report a problem with this question

14. 14. A client arrives with an open cut, an inflamed swollen area, or signs of a nail/skin infection on the area to be serviced. What should the technician do?

    • A.Proceed normally because the client is paying for the service
    • B.Refuse to perform the service on that area and refer the client to a physician✓ Answer
    • C.Use extra disinfectant on the client's skin and proceed
    • D.Cover the infection with polish and continue

    A technician is not a medical provider and must refuse service on any area showing broken skin, inflammation, swelling, or signs of infection, referring the client to a physician. Servicing such an area can worsen the condition, spread infection to others, and expose the technician; disinfectant is for surfaces and implements, not for treating a client's infected skin.

    Source: NIC Infection Control content outline (contraindications: refuse service on broken/infected skin, refer to physician)Report a problem with this question

15. 15. Which level of decontamination destroys ALL microbial life, including hard-to-kill bacterial spores, and is typically achieved with an autoclave?

    • A.Sterilization✓ Answer
    • B.Disinfection
    • C.Sanitation (cleaning)
    • D.Antisepsis

    Sterilization is the highest level of decontamination because it destroys every microorganism, including resistant bacterial spores; disinfection kills most pathogens but not spores, which is why sterilization requires an autoclave (steam under pressure) rather than a liquid disinfectant. Most nail-salon tools are only disinfected, not sterilized.

    Source: NIC Nail Technology Content Outline: Infection Control & Safety; Milady Standard, Decontamination levels (sterilization > disinfection > sanitation)Report a problem with this question

16. 16. After multi-use metal implements have been cleaned and disinfected, how should they be stored until the next client?

    • A.Loose on the open workstation next to used tools
    • B.Back in the used liquid disinfectant jar indefinitely
    • C.In the technician's pocket or apron for quick access
    • D.In a clean, covered (closed) dry container separate from dirty implements✓ Answer

    Disinfected implements must be stored in a clean, covered, dry container kept apart from soiled tools, because leaving them exposed on the workstation, in a pocket, or in used solution lets airborne dust, skin contact, or contaminated liquid recontaminate them and defeat the disinfection. A closed container preserves the disinfected state until use.

    Source: NIC Content Outline: Infection Control & Safety; Milady Standard, Storage of disinfected implements (clean, covered, dry container)Report a problem with this question

Practice questions based on the NIC national nail technology content outline. Not affiliated with NIC, PSI, or any state board. Your state may add state-law content — check your board's requirements. About NIC exams →