Detergent formulations incorporate fluorescent dyes in order to__________________?
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Answer: A. Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the
Explanation
Fluorescent whitening agents absorb ultraviolet light and re-emit it in the blue region. This optical conversion makes fabrics appear significantly brighter and whiter to human eyes. Brighteners compensate for natural yellowing in aged textile fibers effectively. Ultraviolet radiation is invisible electromagnetic radiation just beyond violet light. Fluorescent compounds absorb high-energy UV photons and emit lower-energy visible light. Detergent formulations incorporate these dyes to enhance visual laundry cleaning results.
Laundry detergents utilize optical brighteners to maintain fabric appearance over multiple washes. Paper manufacturing also employs optical brightening agents to improve paper sheet brightness. Consumer perception of cleanliness is heavily influenced by fabric reflectance properties. Brand distinctiveness is achieved through packaging design and marketing rather than dyes. Tarnish inhibitors are specialized chemical compounds added to protect metal surfaces. Option D is incorrect because a valid functional purpose is described in the choices.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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