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प्रश्न
Copper(II) carbonate when heated turns:
पर्याय
pale yellow
black
reddish brown
blue
MCQ
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उत्तर
Black
Explanation:
When light-green copper(II) carbonate (\(\text{CuCO}_{3}\)) is heated, it undergoes thermal decomposition to produce copper(II) oxide (\(\text{CuO}\)), which leaves behind a distinct black solid residue:
\(\text{CuCO}_{3}\xrightarrow{\Delta }\text{CuO\ (black)}+\text{CO}_{2}\uparrow \)
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