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Role of CaCl2 in guard tube

CBSE 2026 31/8/1 · SCI · Easy · Acids, Bases and Salts · MCQ · 1 mark

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During the preparation of hydrogen chloride gas on a humid day, the gas is usually passed through a guard tube containing calcium chloride. The role of CaCl2\text{CaCl}_2 taken in guard tube is to –

  1. A.

    Absorb the evolved gas

  2. B.

    Moisten the gas

  3. C.

    Absorb moisture from the gas

  4. D.

    Absorb chloride ions from the evolved gas

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