Practice Test Geeks(CCT) Carpet Cleaning Technician Certified Practice Test
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Carpet Fiber Identification & Construction Flashcards

7 cards from real CCT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Carpet Fiber Identification & Construction flashcards as text

  1. A customer's carpet turns yellow after cleaning. The most likely cause when the fiber is wool is:

    Answer: Residual alkaline cleaner reacting with wool protein

    Alkaline residue left on wool oxidizes and causes yellowing; wool must always be rinsed to a near-neutral pH to prevent this reaction.

  2. Which carpet construction provides the best performance in high-traffic commercial settings?

    Answer: Dense, low-level loop or cut-loop commercial carpet

    Dense, low-level loop or commercial cut-loop carpets resist matting and crushing far better than high-pile constructions in heavy traffic.

  3. Triexta (PTT) fiber, used in brands like Mohawk SmartStrand, is derived from:

    Answer: Partially from corn glucose (bio-based feedstock)

    Triexta (PTT) is partially bio-based, with about 37% derived from corn glucose (PDO), distinguishing it from fully petroleum-based synthetics.

  4. What is the purpose of the secondary backing on a tufted carpet?

    Answer: To add dimensional stability and improve adhesion for installation

    Secondary backing (usually jute or action-bac polypropylene) is laminated to the primary backing to add stability, stiffness, and better bond for adhesive installation.

  5. Which test best identifies silk carpet fiber in the field?

    Answer: Burn test — silk burns slowly, smells like hair, leaves crushable ash, and feels cool to touch when held

    Silk burns like wool (protein fiber), smelling of burning hair with a crushable ash, and has a characteristic cool, smooth feel that helps distinguish it from synthetics.

  6. What does 'heat-setting' accomplish in cut pile carpet yarn production?

    Answer: It locks the twist in the yarn so tips resist unraveling under traffic

    Heat-setting uses steam or dry heat to 'memorize' the yarn twist so the fiber tips remain tightly curled instead of spreading open when walked on.

  7. A carpet labeled '100% BCF nylon' means the fiber is:

    Answer: Bulked continuous filament — long continuous strands (not staple fiber)

    BCF stands for Bulked Continuous Filament, meaning the fiber is one long continuous strand that is bulked (crimped) for softness, as opposed to short-staple spun fiber.