Question:

Potassium metabisulphite is a (an)

Updated On: May 15, 2024
  • preservative
  • antioxidant
  • artificial sweetener

  • Both (A) and (B)

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The Correct Option is D

Approach Solution - 1

Potassium metabisulphite, \(K_2S_2O_5,\) is a white crystalline solid with pungent odour of sulphur. It is used as an antimicrobial preservative, antioxidant and bleaching agent in food.

So, the correct answer is (D): Both (A) and (B)

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Approach Solution -2

Ans. K2S2O5 or potassium metabisulphite is a white crystalline solid with a strong sulfur scent. 

  • Frequently used as a wine or must ingredient, potassium metabisulfite produces sulfur dioxide (SO2). The disinfectant sulfur dioxide is used.
  • In the brewing business, potassium metabisulfite is occasionally used to prevent the growth of uncontrolled bacteria and fungi. 
  • It serves as a food-bleaching, antioxidant, and antibacterial preservative. 
  • The preservative potassium metabisulfite is a substance that is frequently used in homes to make wine as well as to preserve various fruits and vegetables.
  • Lemon juice occasionally has potassium metabisulfite added as a preservative.
  • In the textile business, potassium metabisulfite is used for cotton printing and dyeing.
  • As an alternative to sodium sulfite, potassium metabisulfite is occasionally used to precipitate gold from an aqua regia solution.
  • It is an ingredient in specific photographic developers and repairing treatments.
  • In order to make coconut cream, it serves as a bleaching agent.
  • It serves as a preservative in certain pickles.
  • It is applied while etching samples of iron-based metal for microstructural examination.
  • It serves as a preservative in aam papad.


 

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Approach Solution -3

Potassium metabisulfite (K2S2O5) is a chemical compound that is used as food preservatives. It is a white crystalline powder and has a sulphurous odour and it contains sulphur dioxide. This gives it antioxidant properties. The people may have an allergic response to the individual when they get the exposure to the products that contain potassium metabisulfite.

So, the correct answer is (D): Both (A) and (B)

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Chemistry in Everyday Life

The scientific study of matter’s properties and behaviour is known as chemistry. It is a natural science that studies the elements that makeup matter, as well as the compounds, made up of atoms, molecules, and ions: their composition, structure, qualities, and behaviour, as well as the changes that occur when they mix with other things.

  • Importance of Chemistry in Food - Chemicals are the fundamental components of everything. Chemical molecules make up all food, including carbs, vitamins, lipids, proteins, and fibre, which are all safe and often desirable.
  • Importance of Chemistry in Medicines - Medicines or pharmaceuticals are chemical substances that are used to treat diseases and relieve pain. Chemistry has made significant contributions to health care. Chemistry, for example, aids in the manufacture and application of surgical materials.
  • Importance of Chemistry in Cosmetics - In our daily lives, we use lotions, fragrances, talcum powder, and a variety of other cosmetic goods. All of these items are developed in laboratories using chemicals for our health and skin.
  • Importance of Chemistry in Soaps and Detergents - Soaps are sodium and potassium salts of fatty acids with greater molecular weights, such as stearic acid, palmitic acid, and oleic acid. Sodium salts of long-chain alkyl hydrogen sulphates or sodium salts of long-chain alkyl benzene sulphonic acids are commonly used as detergents.