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Science · 2026 · 1 mark
CBSE 2026 · Region 4 · Set 1 · Q19
An aqueous solution turns red litmus blue. Excess addition of which of the following solution would reverse the change?
An aqueous solution turns red litmus blue. Excess addition of which of the following solution would reverse the change ?
Official answer
(B)
Hydrochloric acid
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CBSE Class 10 Science past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.