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Science · 2023 · 1 mark
CBSE 2023 · Region 4 · Set 1 · Q3
A metal ribbon'X'burns in oxygen with a dazzling white flame forming a white ash'Y'. The correct description of X, Y and the type of reaction is:
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle \mathrm{X}=\mathrm{Mg} ; \mathrm{Y}=\mathrm{MgO}$; Type of reaction=Combination
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CBSE Class 10 Science past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.