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Science · 2025 · 2 marks
Chemical Reactions and EquationsWriting and Balancing Chemical Equations2 marksApplyvery short answer
CBSE 2025 · Region 1 · Set 3 · Q26
Translate the following statements into chemical equations and then balance them: (a) Nitric acid reacts with calcium hydroxide to form calcium…
Translate the following statements into chemical equations and then balance them :
(a)
Nitric acid reacts with calcium hydroxide to form calcium nitrate and water.
(b)
Sodium chloride reacts with silver nitrate to form silver chloride and sodium nitrate.
Marking-scheme solution
(a) \(\displaystyle 2 \mathrm{HNO}_{3}+\mathrm{Ca}(\mathrm{OH})_{2} \longrightarrow \mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}+2 \mathrm{H}_{2} \mathrm{O}\)
(b) \(\displaystyle \mathrm{NaCl}+\mathrm{AgNO}_{3} \rightarrow \mathrm{AgCl}+\mathrm{NaNO}_{3}\)
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CBSE Class 10 Science past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.