CBSE 2025 · Region 5 · Set 1 · Q1 · 1 mark
The main observations while performing the experiment of burning magnesium ribbon in air are :(i)Magnesium ribbon burns with a dazzling white flame.(ii)A white powder is formed.(iii)Magnesium ribbon vapourises.(iv)Aqueous solution of the white powder turns blue litmus to red.
The main observations while performing the experiment of burning magnesium ribbon in air are :
(i)
Magnesium ribbon burns with a dazzling white flame.
(ii)
A white powder is formed.
(iii)
Magnesium ribbon vapourises.
(iv)
Aqueous solution of the white powder turns blue litmus to red.
Official answer
From CBSE’s own marking scheme for this paper.
(C)
(i) and (ii)
Chemical Reactions and EquationsCombination and Decomposition ReactionsUnderstandmcqeasy
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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.