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ICSE Class 10 Chemistry 2023 Paper

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State one relevant observation for each of the following:
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Question : 68 of 88
Marks: +1, -0
Burning of ammonia in excess of oxygen.
Solution:  
When ammonia burns is excess of oxygen nitrogen gas and water is formed.
4NH3+3O2→2N2+6H2O4 \mathrm{NH}_3 + 3 \mathrm{O}_2 \rightarrow 2 \mathrm{N}_2 + 6 \mathrm{H}_2 \mathrm{O}
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