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During the preparation of HCl gas on a humid day, the gas is usually passed through the guard tube containing CaCl₂. The purpose of using CaCl₂ is

During the preparation of HCl gas on a humid day, the gas is usually passed through the guard tube containing CaCl₂. The purpose of using CaCl₂ is

Q. During the preparation of HCl gas on a humid day, the gas is usually passed through the guard tube containing CaCl₂. The purpose of using CaCl₂ is

  1. To add moisture to the gas (HCl)
  2. To absorb HCl gas
  3. To absorb moisture from HCl gas
  4. To Use it as a catalyst

Answer: To absorb moisture from HCl gas

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