______ gas is used for the manufacturing of bleaching powder.

The correct answer is Chlorine.

Key Points

• Calcium hypochlorite is the chemical term for bleaching powder and its chemical formula is \(CaOCl_2 \).
• Bleaching powder is a pale yellowish powder that dissolves in water and has a strong chlorine odour.
• Chlorine gas, which is a byproduct of the chlor-alkali process, reacts with dry slaked lime to create bleaching powder.
• Thus, chlorine gas is used for the manufacturing of bleaching powder.
• Bleaching powder has its applications as a bleaching agent, oxidizing agent, and disinfectant.

Additional Information

• Nitrogen:
  • With its application in fertilizers, nitric acid, nylon, dyes, and explosives, nitrogen is crucial to the Cl.
• Sulphur:
  • One of the most significant components used as an industrial raw material is sulphuric acid, which is the principal derivative of sulphur.
  • Sulfur is also used to make fertilisers, batteries, detergents, fungicides, matches, and pyrotechnics.
• Oxygen:
  • The majority of combustion processes require oxygen, an element that belongs to the periodic table's chalcogen group.