CSLB General Building (B) Trade Practice Test
Frequently asked questions
How many California Manicurist (Nail Technician) practice questions are here?+
A full bank of original California Manicurist (Nail Technician) practice questions across the official content areas, weighted like the real exam, with explanations. Free, no signup.
What is the California Manicurist (Nail Technician) exam like?+
About 100 questions, 90 minutes, and you need 75% to pass. Practice by topic here, then take the full timed mock exam to gauge readiness.
Are these the real exam questions?+
No. Every question is 100% original, written from public primary sources with explanations. We never copy real exam questions or paid prep material.
Can I study in Chinese or Spanish?+
PrepPass practice is in English, 中文 and Español. The official exam is in English — switch the question language to English any time to rehearse the exact terminology you'll see on test day.
Sample practice questions
A few real questions from this free bank, with full explanations. Use the practice tool above for the whole set.
- 1. Disinfection & Safety
California nail salons must bring their reusable implements to which level of decontamination?
- a.Sanitizing with soap and water only
- b.Sterilization in an autoclave
- c.Disinfection with an EPA-registered product after cleaning
- d.Wiping with 70 percent rubbing alcohol
Answer: c
Explanation: Disinfection kills most pathogens on hard, non-porous surfaces and is the level California requires in nail salons. Soap and water only removes soil and is the first step, never a substitute. Sterilization destroys all microbial life including spores but is not required or practical for salon work, and rubbing alcohol is not a hospital-grade disinfectant.
- 2. Disinfection & Safety
Why must disinfectant concentrate be measured and mixed exactly as the manufacturer's label directs?
- a.A stronger mix always disinfects faster, so more concentrate is preferred
- b.The dilution only affects how strongly the product smells
- c.Too weak will not kill the pathogens, and too strong can damage implements and irritate skin and lungs
- d.The label ratio is only a suggestion as long as tools soak overnight
Answer: c
Explanation: The EPA registration is based on the exact dilution and contact time on the label, so any other mix is unproven and using it is a violation. An under-diluted solution leaves pathogens alive, while an over-concentrated one can pit and corrode implements and irritate skin and airways. Soaking longer does not rescue a solution that was mixed wrong.
- 3. Disinfection & Safety
It is closing time and you are in charge of the two pedicure chairs. What does the end-of-day foot spa procedure require?
- a.Remove the screen or filter, clean out all the trapped debris, scrub the screen and the surface behind it with soap and water, put it back, then refill with water and disinfectant, circulate for the full contact time, drain and air dry.
- b.Fill the tub with very hot water and circulate it for an hour to flush the pipes.
- c.Wipe the outside of the chair and the footrest with a disinfectant wipe and leave the basin empty and dry.
- d.Pour undiluted bleach into the empty basin and leave it there until morning.
Answer: a
Explanation: The end-of-day routine in option A is built around opening up the screen or filter, because that is where hair, skin and product collect and feed bacteria overnight. Hot water alone (B) has no disinfecting power. Wiping the outside of the chair (C) ignores the basin entirely, and undiluted bleach sitting in an empty basin (D) is not a labeled use, damages the equipment and does not replace the required circulated disinfection.
Source: California Board of Barbering and Cosmetology Health and Safety Regulations (CCR Title 16)
- 4. Disinfection & Safety
The owner of the salon where you just started hands you an unlabeled jug of monomer with a very strong odor and tells you to use it because it lasts longer and costs less. What should you do?
- a.Use it during your shift but keep your own EMA monomer for your regular clients.
- b.Refuse to use it, tell the owner the product is prohibited in California, and report the salon to the Board of Barbering and Cosmetology.
- c.Use it only on clients who ask for the strongest possible set, and warn them about the smell.
- d.Use it but wear a dust mask and prop the back door open for ventilation.
Answer: b
Explanation: Option B is the only correct answer: a prohibited product stays prohibited no matter who tells you to use it, and it is your license that is on the line along with your clients' nails. Using it part of the time (A and C) is still using it, and a client cannot consent to a banned product. A dust mask (D) filters dust, not vapors, and no amount of fresh air makes an illegal monomer legal.
Source: California Board of Barbering and Cosmetology Health and Safety Regulations (CCR Title 16)
- 5. Nail Services
A client's gel color keeps lifting within a few days. You realize the salon is curing an LED gel line under an old lamp that came with a different brand. What is the most likely cause?
- a.The gel was applied in coats that were too thin
- b.The lamp does not match the wavelength and output the gel needs, so the product is not curing completely
- c.The client is washing her hands too often
- d.The finished nails were wiped with alcohol after the final cure
Answer: b
Explanation: Gel cures only when its photoinitiators receive the specific wavelength and intensity the manufacturer specifies, so the wrong lamp leaves the product under-cured, which causes lifting and can also sensitize the client. Thin, even coats are correct technique and are not the problem. Hand washing does not lift a properly cured gel, and wiping the inhibition layer with alcohol after the final cure is a normal finishing step.
- 6. Nail Services
A client's natural nails are thin, peeling and tender after months of aggressive drilling at another salon, although the skin is healthy. She wants a full acrylic set today. What is the best professional response?
- a.Describe what you observe, decline the enhancement today, offer a gentle strengthening manicure, and note it on her record card
- b.Apply the acrylic set but keep the product thinner than usual
- c.Tell her she has a nail disease and send her to a doctor
- d.Do the set anyway, since the enhancement will cover the damage
Answer: a
Explanation: You may describe what you see and recommend a gentler service, and the client record documents the condition and what you advised, which protects both of you. Building product over an already thinned, tender plate causes more damage and likely lifting, and a thinner overlay does not fix a weak foundation. You must never name a disease or diagnose, and the skin here is healthy so there is nothing medical to report.
- 7. Anatomy & Disorders
A client tells you that months ago she slammed her finger in a car door, and ever since, the new nail has grown in with a permanent ridge and a twisted shape. Which nail structure was most likely damaged?
- a.The nail bed
- b.The hyponychium
- c.The matrix
- d.The free edge
Answer: c
Explanation: The matrix is the only tissue that produces new nail cells, so an injury there can change the shape of every nail that grows out afterward, sometimes permanently. The nail bed only supports the plate as it slides forward; it does not manufacture new nail. The hyponychium and the free edge are at the fingertip end, far from where new nail is formed.
- 8. Anatomy & Disorders
A client removes her sandals and you see a thickened, yellow-green toenail that is crumbling at the edge and gives off a foul odor. What must you do?
- a.Buff the nail thin, disinfect extra well, and continue the pedicure
- b.Politely explain that you cannot perform the service and recommend that she see a physician
- c.Tell her she has a nail fungus and sell her an antifungal product from the retail shelf
- d.Service the other nine toes and simply skip that one
Answer: b
Explanation: A thickened, discolored, crumbling nail with an odor shows signs of infection, and California manicurists may not service an infected nail. The correct response is to politely explain that you cannot perform the service and recommend she see a physician, without naming a disease. Buffing or filing it spreads the organism through the dust and around the salon, working around it still exposes the tools, the water and the next client, and naming the condition and selling a treatment is diagnosing and treating, which is outside your scope.
Source: California Board of Barbering and Cosmetology Health and Safety Regulations (CCR Title 16)
- 9. Chemistry & Products
In a liquid-and-powder (acrylic) service, how do the products actually harden?
- a.The liquid is the polymer and the powder is the monomer, and the bead hardens only after it goes under an LED lamp.
- b.The liquid monomer and the powder polymer, with an initiator, join together in polymerization — a heat-releasing (exothermic) reaction that cures without any lamp.
- c.The powder carries photoinitiators, so the bead will not form chains until UV light reaches it.
- d.Polymerization is a cooling reaction, so a properly mixed bead feels cold to the client as it sets.
Answer: b
Explanation: Liquid-and-powder systems are a monomer (liquid) plus a polymer (powder) with a catalyst/initiator; when they meet, the small monomer units link into long chains in polymerization. That reaction gives off heat, which is why a client may feel warmth, and it needs no lamp at all. The choices that reverse monomer and polymer, or that require a lamp or photoinitiators, describe UV/LED gel, not liquid-and-powder; and polymerization releases heat rather than absorbing it.
- 10. California Law
Which agency issues and regulates manicurist licenses in California, and which law governs that licensing?
- a.The California Department of Public Health, under the state sanitation code for nail salons
- b.The county health department where the salon is located, under local ordinance
- c.The Board of Barbering and Cosmetology, part of the Department of Consumer Affairs, under the Barbering and Cosmetology Act
- d.Cal/OSHA, under the state workplace safety code
Answer: c
Explanation: Manicurists are licensed, renewed and inspected by the Board of Barbering and Cosmetology, which operates under the Department of Consumer Affairs, and the Barbering and Cosmetology Act is the governing statute. The county health department and the Department of Public Health regulate other kinds of facilities, not nail licensing. Cal/OSHA covers worker safety topics such as chemical labeling and bloodborne pathogens, but it does not issue your manicurist license.
Source: California Barbering and Cosmetology Act (B&P Code §7301 et seq.)