Question

Which among the following is used as a source of oxygen in submarine in emergency breathing apparatus?

• A. Potassium superoxide
• B. Sodium peroxide
• C. Rubidium superoxide
• D. Lithium monoxide

Hint:

Potassium superoxide (KO$_2$) is used in submarines for generating oxygen during emergencies due to its ability to release oxygen when it reacts with water.

Answer 1

The Correct Option is A

Step 1: Understanding oxygen generation in submarines.
In submarines, oxygen is often generated through chemical reactions in emergency situations, particularly when a breathable atmosphere is required in a confined space. Potassium superoxide (KO$_2$) is commonly used in these devices. It releases oxygen when it reacts with moisture in the air.
Step 2: Analyzing the options.
(A) Potassium superoxide: Potassium superoxide is a source of oxygen used in emergency breathing apparatus in submarines. It reacts with water to release oxygen.
(B) Sodium peroxide: Sodium peroxide also releases oxygen, but it is not as commonly used in submarines for this purpose.
(C) Rubidium superoxide: Rubidium superoxide is similar to potassium superoxide but is less commonly used in practice.
(D) Lithium monoxide: Lithium monoxide is not used for oxygen generation in submarines.
Step 3: Conclusion.
The correct answer is (A) Potassium superoxide, as it is widely used in emergency breathing apparatus.