Which types of oxygen are found in aircrafts?

• A. Liquid oxygen in the cabin
• B. Chemically generated oxygen and compressed oxygen
• C. Only compressed oxygen
• D. Oxygen tanks in the cargo hold

Answer: (B)

The presence of chemically generated oxygen and compressed oxygen in aircraft is crucial for ensuring the safety and well-being of passengers and crew, especially during emergencies. Chemically generated oxygen systems, often used in situations where quick access to oxygen is needed, function by a chemical reaction that produces oxygen when activated. This is typically employed in portable oxygen masks, which provide immediate relief when cabin pressure drops.

On the other hand, compressed oxygen systems are stored in pressurized tanks and are used in various configurations within the aircraft. These systems are more common and can supply oxygen for longer durations, making them suitable for high-altitude flights. The combination of both systems allows for redundancy and reliability, ensuring that there is a reliable oxygen supply regardless of the circumstances.

Other options like liquid oxygen in the cabin or only compressed oxygen do not encompass the full range of oxygen delivery methods utilized in aviation. Furthermore, the notion of oxygen tanks located exclusively in the cargo hold lacks practicality, as it does not consider the accessibility needed for emergency situations. Thus, the integration of both chemically generated and compressed oxygen systems represents a comprehensive approach to managing in-flight oxygen supply needs.