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An “E” size cylinder is turned on, and the flowmeter is off. Which of the following are the most likely causes of a hissing sound?     1. A cracked flowmeter     2. Inadequate pressure in the cylinder     3. An obstruction at the regulator outlet     4. A leak in the connection between the yoke and the cylinder opening  

The cylinder color for oxygen is

What is the cylinder color for nitrous oxide?    

Which of the following gases is used to decrease the work of breathing associated with severe airway obstruction?  

In the event of a fire in a hospital, which of the following might be necessary?     1. Provide supplemental oxygen to patients who require it.     2. Shut off oxygen zone valves to the affected area.     3. Shut off the main oxygen valve.     4. Check oxygen line pressure.  

A full “H” size cylinder is used to provide oxygen to an air-entrainment mask at 6 L/min. How long will the tank last?  

Which type of valve operates on the principle that as the pressure in a cylinder increases, the temperature of the gas increases?  

Which of the following are safety features incorporated into a medical gas piping system?      1. Zone valves      2. Shut off valves      3. Pressure-relief valves      4. In-line oxygen analyzers  

Which of the following types of oxygen storage device are appropriate for home care?      1. Compressor      2. Concentrator      3. Bulk oxygen system      4. Liquid oxygen cylinder  

Which agency is responsible for the regulations that govern the manufacture, storage, and transport of compressed gases?