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प्रश्न
Give one use of optical brighteners in the laundry.
लघु उत्तर
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उत्तर
- Optical brightening agents are colourless dyes that attach themselves to the fabric and make them appear whiter or brighter by reflecting light.
- To counteract the dullness and yellowness of fabrics, which come with age, the use of optical brighteners (OBAs) is recommended.
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Notes
Students should refer to the answer according to their questions.
Optical Brighteners
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