shyam was cooking potato curry on a chulha to his surprise he observed that the copper vessel was getting blackened from outside. IT may be due to
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5
Answer:
Explanation:
The copper vessel was blackened from outside because of insufficiency of oxygen. When there is insufficient oxygen is provided, then the vessels get blackened from outside
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4
Answer:
Incomplete combustion of the fuel
Explanation:
It was because of incomplete combustion of fuel
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