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Fire Extinguisher

Which of the ...

Question

Which of the following statement is not correct about carbon dioxide acting as a fire extinguisher for electrical fires ?

(a) it is heavier than air

(b) it is lighter than air

(c) it is not combustible

(d) it does not support combustion

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Solution

(b) it is lighter than air

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The following statements regarding characteristic of carbon dioxide $(C O_{2})$ are true except that it is:

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Q. Question 22
Indicate whether the following statements are true or false. Also write the false statements in their correct form.
(a) Air is necessary for combustion.
(b) Magnesium is a non-combustible metal.
(c) Carbon dioxide is an excellent fire extinguisher.
(d) Calorific value of wood is higher than that of coal

Q. Indicate whether the following statements are True or False. Also, write the false statements in their correct form.
(a) Air is necessary for combustion.
(b) Magnesium is a non-combustible metal.
(c) Carbon dioxide is an excellent fire extinguisher.
(d) Calorific value of wood is higher than that of coal.

Q. Nitrogen is not a supporter of combustion. Then why isn't it used in fire extinguishers????

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