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The CPW exam has 180 questions and runs 2 hours 30 minutes.
These 10 free CPW questions are organized by exam domain, so you can see how each part of the Certified Professional Wetcleaner blueprint is tested. Reveal the answer and explanation under each question.
At intake, a customer points to a stain on a silk blouse and says, "I tried something from under the kitchen sink, but it did not work." The employee has recorded the stain location and inspected the label. Which follow-up question provides the most important missing information for the stain-removal technician?
Correct answer: C - "Which product did you apply, and did you use any heat?"
An order contains a dress and its detachable belt. The dress has passed final inspection; the tagged belt is accounted for but still in finishing. The customer asks to collect the dress now and the belt tomorrow. Shop policy allows an agreed, documented partial pickup. How should the employee handle the request?
Correct answer: A - Release the dress and record the belt as outstanding on the order.
After wetcleaning, a lined jacket puckers along its lower edge. Measurements taken between the same landmarks show that the shell has retained its original length, but the lining is shorter. The seams remain intact, and neither fabric shows matting. What best explains the distortion?
Correct answer: A - Differential shrinkage between shell and lining.
Nail polish has soaked through the hem of a polyester dress into its acetate lining. An acetone-based remover does not transfer color from a concealed area of the shell. Which material fact still rules out using that remover across the stained layers?
Correct answer: B - Acetone can dissolve the acetate lining, even without visible dye transfer.
A concealed-area examination produces these findings: static contact with water leaves no visible tint; rubbing with a damp white cloth transfers red color; dry rubbing produces little transfer. Which colorfastness problem do the results identify?
Correct answer: C - Wet crocking: color transferring through rubbing in the presence of moisture.
A fresh coffee-with-cream spill has left a brown stain and an oily edge on a washable cotton shirt. Concealed tests permit cool aqueous treatment and the available spotting agents. Which opening approach best accounts for the different components of the spill?
Correct answer: C - Start with cool aqueous treatment, then reassess the remaining fat and beverage residues.
The wash log shows unchanged detergent delivery, load weight, and temperature, yet cleaning performance has deteriorated. Water at the softener outlet has risen from 20 to 160 mg/L hardness as CaCO3; pH remains 7.2. Which system deserves the first corrective check?
Correct answer: D - The softener and its regeneration cycle, since the outlet water is now hard.
A wool-trouser process calls for transfer from the dryer to tension finishing at 12-18% residual moisture on a dry-mass basis. A pair has an established dry reference mass of 0.800 kg and now weighs 0.920 kg. Its condition is otherwise satisfactory. Which assessment and action fit this process?
Correct answer: B - Residual moisture is 15%; transfer the trousers to tension finishing.
For the first load from a 10 kg dry batch, select the correct load weight and detergent volume. The washer nameplate reads 18 kg, the selected delicate program permits a maximum of 8 kg dry, and the detergent instruction is 5 mL per kilogram of dry garments.
Correct answer: A - Load 8 kg; dose 40 mL.
A maintenance worker sees a vapor plume where hot press condensate discharges into an atmospheric receiver and recommends replacing the steam trap immediately. The press heats evenly, and the trap cycles. What is the soundest response to this observation?
Correct answer: D - Check trap operation; flash steam can produce a plume without proving a leak.
The CPW exam also covers these domains. Drill them in the full free practice test:
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