What is inside a red color fire extinguisher?

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2015

Explanation

According to standard fire safety color codes, a fire extinguisher with a solid red body contains water.
Water extinguishers are designed for Class A fires, which involve solid combustible materials like wood, paper, and textiles.
The primary mechanism of a water extinguisher is cooling the fuel source below its ignition temperature.
This type is distinguished from others that have a colored band (e.g., black for CO2, blue for powder) on a red cylinder.

Option A: Carbon dioxide (CO2) extinguishers are identified by a black band or label, not a solid red color.
Option B: Dry chemical powder extinguishers are identified by a blue band or label.
Option C: Foam extinguishers are identified by a cream-colored band or label.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Fire extinguisher types and color codes as background academic context rather than a clinical decision trigger.
Knowledge of fire extinguisher types is a critical component of mandatory fire safety training for all hospital staff, including nurses.
In a hospital, fires can originate from various sources, including electrical equipment, flammable chemicals in labs, or combustible materials in patient rooms.
Using the wrong type of extinguisher can be ineffective and dangerous. For example, using a water extinguisher on a fire involving medical electrical equipment can cause electrocution and spread the fire.

How to Approach the Question

First, identify the key information in the question: the object is a 'fire extinguisher' and its specific feature is 'red color'.
This is a factual recall question that relies on knowledge of standard safety color codes.
Recall or look for the association between the color of a fire extinguisher and its contents.
A solid red extinguisher universally signifies 'Water'. Other types have a red body but are differentiated by a colored band (e.g., blue for powder, black for CO2).
Evaluate the options based on this knowledge. 'Water' is the content associated with a solid red extinguisher.
Eliminate the other options: Carbon dioxide (black band), Dry chemical (blue band), and Foam (cream band).

Concept Tested & Keywords

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E6 Nursing Fundamentals Potter Perry 12e Part 2 p. 193-195

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