CBSE 2025 · Region 4 · Set 1 · Q2 · 1 mark
In order to prepare dry hydrogen chloride gas in humid atmosphere the gas produced is passed through a guard tube (drying tube) which contains :
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Calcium chloride
Acids, Bases and SaltsChemical Properties of Acids and BasesRemembermcqmedium
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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.