In a cartridge-operated dry chemical type fire extinguisher, when the CO2 cartridge is activated, the dry chemical is released from the extinguisher __________.

Correct Answer: Option A — with the squeeze-grip on/off nozzle at the end of the hose

In cartridge-operated dry chemical extinguishers, the CO2 cartridge pressurizes the main cylinder, forcing the chemical agent through the discharge hose. The operator controls the flow of the dry chemical powder using the squeeze-grip nozzle located at the end of the hose, allowing for precise application.