CBSE 2025 · Region 6 · Set 1 · Q2 · 1 mark
You have three aqueous solutions A, B and C as given below : A - Potassium nitrate B - Ammonium chloride C - Sodium carbonate The ascending order of the pH of these solutions is :
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle \mathrm{B}<\mathrm{A}<\mathrm{C}$
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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.