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RRB Junior Engineer / DMS / CMA 2019 · Question 3708 of 3719

What is the common name of the compound CaOCl 2?

  1. AWashing soda
  2. BBaking soda
  3. CBleaching powderCorrect
  4. DTartaric acid

Answer: C. Bleaching powder

Explanation

Explanation: Bleaching powder is yellowish powder soluble in water . Calcium hypochlorite is known as bleaching powder. Formula- Ca(OCl) 2 It has a strong smell of chlorine. Uses: Used in bleaching clothes in the laundry Used in bleaching of cotton and linen in textile industries. Used as an oxidizing agent. used as a disinfectant for disinfecting water. Used as a bathroom cleaner Preparation - Ca(OH) 2 + Cl 2 → CaOCl 2 + H 2O An oxidizing agent is a substance that oxidizes other substances i.e. It makes them lose their electrons. An oxidizing agent has the ability to accept electrons from others. Additional Information Washing Soda: Washing soda is Hydrated Sodium carbonate. Its chemical name is sodium carbonate (Na 2CO 3·10H 2O). It is used in glass, soap, and paper industries. Baking soda: Sodium bicarbonate is the chemical name of Baking soda. Its formula is NaHCO 3. It is used in Fire extinguishers, bakeries, reagents. Tartaric acid: Tartaric acid (C 4H 6O 6) is an organic acid that is naturally present in many fruits such as tamarind, grapes, banana, and citrus fruits. It is mostly used as an antioxidant and leavening agent in food and used in the process of winemaking.

Source: RRB JE 2019 (CBT 2) (IT) Previous Year Paper (30 Aug 2019) — prepp.in solved-paper PDF (answer key with explanations) · reliable-secondary

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