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Science · 2023 · 1 mark
CBSE 2023 · Region 6 · Set 3 · Q4
There are four solutions $\displaystyle \mathrm{A}, \mathrm{B}, \mathrm{C}$, and D with pH values as follows : Solution A B C D pH $\displaystyle 2.0$ $\displaystyle 7.0$ $\displaystyle 8.0$ $\displaystyle 12.0$
Which solution(s) would liberate hydrogen gas with zinc ?
| Solution | A | B | C | D |
| pH | $\displaystyle 2.0$ | $\displaystyle 7.0$ | $\displaystyle 8.0$ | $\displaystyle 12.0$ |
Official answer
From CBSE’s own marking scheme for this paper.
(C)
A and D
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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.