CBSE 2025 · Region 5 · Set 1 · Q4 · 1 mark
A metal, 'X', on treatment with sodium hydroxide liberates a gas 'G'. It also liberates the same gas, 'G' on treatment with dilute sulphuric acid. Based on above information, 'X' and 'G' respectively are
Official answer
From CBSE’s own marking scheme for this paper.
(C)
Zinc and Hydrogen
Metals and Non-metalsChemical Properties of MetalsUnderstandmcqmedium
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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.