ICSE Class 10 Chemistry 2023 Solved Paper

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SECTION - I

Choose the correct answers to the questions from the given options.
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Question : 9
Total: 88
The nitrate which on thermal decomposition leaves behind a residue which is yellow when hot and white when cold:
Solution:  
(d) Zinc nitrate
Explanation:
2Zn(NO3)2
2ZnO
Pale yellow Hot
+4NO2+O2
On cooling it changes to white due to formation of zinc nitrate hexahydrate.
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