GATE (TF) Textile 2014 Question Paper Solution | GATE/2014/TF/21

Question (Textile Engineering & Fibre Science)
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Why is sodium chloride used in bleach?

Sodium chloride (NaCl) is not typically used as an ingredient in bleach. Bleach is a chemical product that is used to whiten or disinfect fabrics, surfaces, or other materials. It usually contains an active ingredient, such as chlorine bleach (sodium hypochlorite) or hydrogen peroxide, which is responsible for its bleaching or disinfecting properties.

Sodium chloride, on the other hand, is a common salt that is widely used for various purposes, including as a seasoning, food preservative, and deicing agent, among others. It is not typically used as a bleaching agent or disinfectant on its own.
However, it’s worth mentioning that in some industrial processes, sodium chloride may be used as an auxiliary agent or additive in combination with other chemicals in the production of bleaching agents or disinfectants. For example, in some processes for producing chlorine bleach (sodium hypochlorite), sodium chloride may be used as a raw material in the electrolysis of brine (a solution of sodium chloride in water) to produce chlorine gas, which is then used to produce sodium hypochlorite bleach. But in the final bleach product, sodium chloride is not intentionally used as an active bleaching agent or disinfectant.
It’s important to note that the formulation and ingredients of bleach products can vary depending on the specific brand, type, and intended use. It’s always recommended to follow the manufacturer’s instructions and safety guidelines when using bleach or any chemical product, and to use them in a well-ventilated area and handle them with proper precautions.

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