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____________________ system includes a supply of dry chemical, an expellent gas such as compressed nitrogen, detection devices and nozzles for discharging the dry chemical into the hazard area.

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____________________ system includes a supply of dry chemical, an expellent gas such as compressed nitrogen, detection devices and nozzles for discharging the dry chemical into the hazard area.

(a) Hydrant

(b) Foam

(c) Dry chemical

(d) Water spray

This question was addressed to me in semester exam.

I want to ask this question from Fire Protection in portion Fire Protection in Building, Carpentry and Joinery of Construction & Building Materials

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The correct choice is (c) Dry chemical

Explanation: The dry chemical system can be applied in two ways, namely, total flooding or local application. The former is used for enclosed area where all openings can be closed automatically when the system starts working.

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