Which of the following polyhalogen compounds is used in the production of the freon refrigerant R-22?  

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SSC CPO 2024 Official Paper-I (Held On: 27 Jun, 2024 Shift 2)
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  1. Chloroform 
  2. Dichlorodiphenyltrichloroethane 
  3. Methylene Chloride
  4. Carbon Tetrachloride

Answer (Detailed Solution Below)

Option 1 : Chloroform 
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SSC CPO : General Intelligence & Reasoning Sectional Test 1
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Detailed Solution

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The correct answer is Chloroform

Key Points

  • Chloroform is used in the production of the freon refrigerant R-22.
  • R-22, also known as HCFC-22, is a hydrochlorofluorocarbon that has been widely used as a refrigerant in air conditioning and refrigeration systems.
  • The production of R-22 involves the reaction of chloroform with hydrogen fluoride.
  • R-22 has been phased out in many countries due to its ozone-depleting potential, but it was historically significant in the refrigeration industry.

Additional Information

  • Chloroform (CHCl₃) is a colorless, sweet-smelling organic compound that is used as a solvent and in the production of various chemicals.
  • It was once used as an anesthetic but has been replaced by safer alternatives due to its toxicity and potential for causing liver and kidney damage.
  • The use of chloroform in industrial applications requires careful handling and adherence to safety protocols to prevent exposure and environmental contamination.
  • Chloroform is classified as a possible human carcinogen by the International Agency for Research on Cancer (IARC).
  • Freon R-22 has been replaced by more environmentally friendly refrigerants such as R-410A and R-32 in many applications.
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