Chemistry
Explain the reducing action of carbon monoxide with a suitable example.
Carbon
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Answer
Carbon monoxide is a strong reducing agent and it reduces the oxides of moderately or less active metals to their respective metals and itself gets oxidized to carbon dioxide in the process.
CuO + CO Cu + CO2
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Abir went to a mall with his parents on Sunday. While walking around, he noticed red devices fixed on the walls at different places. Curious, he asked his mother about them. His mother explained that those are fire extinguishers. They help to put out fires by releasing a special gas.
His father also told him that it is now mandatory to install fire extinguishers in all kinds of buildings such as offices, schools, apartments, hospitals, etc. to keep people safe.
(a) Name the gas released by fire extinguishers to put out fires.
(b) How does this gas work in putting out the fire ?
(c) Name the type of fire extinguishers used for (i) oil fire (ii) electrical fire.
(d) Why is it dangerous to use water on electrical fire ?