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Question

Foam type fire extinguishers cannot be used to put out electrical fires, due to the presence of which of these?

A
HCl which burns with electricity.
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B
HF which burns with electricity.
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C
Dissolved salts.
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D
Dissolved base.
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Solution

The correct option is C Dissolved salts.
Foam type fire extinguishers contain dissolved salts that act as electrolyte and conduct current.

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