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प्रश्न
What is a fire extinguisher ? What is the substance used in the modern type of fire extinguishers ? How is it an improvement over the soda acid-type and the foam-type fire extinguishers ?
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उत्तर
Fire Extinguisher— Fire extinguishers are a device in which carbon dioxide is produced in different forms for use as the extinguishing agent. It is a modem type of fire extinguisher in which liquid carbon dioxide is stored in a steel cylinder under pressure. Soda-acid and foam types of extinguisher cannot be used for extinguishing fire as they prepared in water, which conducts electricity and there can be short circuiting, causing another fire.
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संबंधित प्रश्न
Name the following:
Substances whose atoms or molecules are not arranged in a geometrical pattern.
FILL IN THE BLANK
.................... is the main gaseous compound of carbon.
Write three chemical properties of carbon.
Name of the following compounds :
State how carbon occurs in the free state and in the combined state.
Carbon monoxide displaces ______ from hemoglobin.
Carbon monoxide enters the human body through ______.
About 18% of the weight of the human body is carbon.
Assertion (A): Carbon monoxide is a toxic gas of carbon.
Reason (R): smoking is a source of carbon monoxide.
Why is carbon monoxide harmful to health? (or) What happens when we breathe Carbon monoxide?
