Skip to content

Home › Exam notes › Railway RRB › Fire & Emergency Basics

Fire & Emergency Basics

Basic Science & Engineering · Safety, Environment & IT

Useful for: Railway RRB

Overview

Fires need heat, fuel and oxygen; removing any one puts them out, and the extinguisher must match the fire class.

Key points

Fire triangle: heat, fuel, oxygen.
Class A (wood, paper, cloth): water.
Class B (flammable liquids): foam, CO₂ or dry powder.
Electrical fires: CO₂ or dry chemical powder — never water.
PASS: Pull the pin, Aim at the base, Squeeze, Sweep.

Explanation

Class D fires (metals) need special dry powder.
Smother small oil fires with a lid or sand.
Evacuate calmly by marked exits; do not use lifts during a fire.
Emergency numbers: 101 (fire), 112 (all emergencies).

Step by step

Identify the concept, tool or rule involved.
Recall the definition, value or procedure.
Check units, safety logic and the direction of the effect.

Examples

The correct extinguisher for a petrol fire → foam or CO₂.
In PASS, the extinguisher is aimed at → the base of the fire.
The fire emergency number in India → 101.

Traps and advanced points

Trap: Using water on oil or electrical fires.
Trap: Aiming at the flames instead of the base.
Trap: Using lifts during evacuation.

Quick revision

Heat–fuel–oxygen.
PASS.
101 fire, 112 emergency.

Practice MCQs

Concept check: AIDS is caused by which virus?
1. HIV
2. Dengue bacterium
3. HBV
4. Influenza virus
Read chapter notes · Similar questions
Show answer
Answer: (a) HIV. AIDS is caused by HIV.
Concept check: How many chromosomes are normally present in a human somatic cell?
1. 23
2. 48
3. 46
4. 44
Read chapter notes · Similar questions
Show answer
Answer: (c) 46. How many chromosomes are normally present in a human somatic cell? — 46.
Concept check: Sound cannot travel through which medium?
1. Vacuum
2. Air
3. Steel
4. Water
Read chapter notes · Similar questions
Show answer
Answer: (a) Vacuum. Sound cannot travel through Vacuum.
Concept check: Vinegar contains mainly which acid?
1. Sulfuric acid
2. Formic acid
3. Acetic acid
4. Citric acid
Read chapter notes · Similar questions
Show answer
Answer: (c) Acetic acid. Vinegar contains mainly Acetic acid.
Concept check: What is the SI unit of pressure?
1. pascal
2. newton
3. joule
4. tesla
Read chapter notes · Similar questions
Show answer
Answer: (a) pascal. Pascal is the SI unit of pressure.

More topics in this chapter

Notes and questions are written by Kundali IQ for practice. They are not official papers; always check the latest official notification for the syllabus and pattern.