Which of the following problems that usually occur using water as a fire extinguisher are solved whe...........

Science Affairs Chemistry

Which of the following problems that usually occur using water as a fire extinguisher are solved when using dry ice instead?

1.Harm to electrical equipment nearby can be avoided.

2.Fire situations caused due to oil spills that are aggravated due to water extinguishers can be more tighcly controlled.

Which of the above is/are correct ?

1 only

2 only

Both 1 and 2

None

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Explanation:

Explanation & Learning: If electrical equipment is on fire, water may conduct electricity and harm those trying to douse the fire. Water is also not suitable for fires involving oil and petrol. So, it sinks below the oil, and oil keeps burning on top.
On the other hand, CO2, being heavier than oxygen, covers the fire like a blanket. Since the contact between the fuel and oxygen is cut off, the fire is controlled. The added advantage of CO2 is that in most cases it does not harm the electrical equipment.