Chemistry
The substance used in artificial respiration is:
- carbon
- carbon dioxide
- carbogen
- carbonization
Carbon dioxide
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Answer
carbogen
Reason — A mixture of 5% carbon dioxide and 95% oxygen, called carbogen, is used for artificial respiration.
Carbon is an element; it is not used in respiration. Carbon dioxide alone is not used because excess CO2 can be harmful. Carbonization is the slow process by which dead plant material turns into coal.
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