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Science · 2024 · 3 marks
CBSE 2024 · Region 4 · Set 2 · Q27
A small amount of copper oxide was taken in a beaker and dilute hydrochloric acid was added with continuous stirring of the solution. Name the compound formed and state the colour of its solution. Write balanced chemical equation for the reaction that occurs. Based on the reaction, state the nature (acidic/basic) of copper oxide.
Marking-scheme solution
Copper Chloride; Blue- green
\(\displaystyle \mathrm{CuO}+2 \mathrm{HCl} \longrightarrow \mathrm{CuCl}_{2}+\mathrm{H}_{2} \mathrm{O}\)
CuO is basic.
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CBSE Class 10 Science past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.