All Exams Test series for 1 year @ ₹349 only
Question

Fire extinguishers emit which gas?

This question was previously asked in
SSC CGL 2017 (Tier 1) Previous Year Paper (16-Aug-2017) (Shift 1)
The correct answer is

Carbon dioxide

Carbon dioxide (CO2) is the gas emitted by common gas-based fire extinguishers. Being denser than air and non-combustible, it blankets the fire, displaces oxygen and smothers the flames, while its rapid expansion produces a cooling effect. Because it leaves no residue and does not conduct electricity, it is preferred for Class B (flammable liquids) and Class C (electrical) fires.

Carbon monoxide is itself flammable and toxic; chlorine is toxic and reactive; nitrogen is occasionally used as a propellant but not as the primary extinguishing agent.

Was this answer helpful?

Similar Questions

  1. In the following reaction, fill in the blank.

    Acid + Base → _______ + Water

  2. Which of the following is a characteristic of an exothermic reaction?

  3. Ozone is an ______ of oxygen.

  4. What is the common characteristic of the elements of the same group in the periodic table?

  5. Which amongst the following is not a cation?

  6. Which of the following bonds are weakest in nature?

  7. What is the chemical name of saltpetre?

  8. The reaction of Copper Sulphate and Iron produces Iron Sulphate and __________.

  9. What is the bond angle (in degrees) in the structure of a benzene molecule?


Important Questions from Chemical Bond and Molecular Structure

  1. Which reaction best supports the Law of Conservation of Mass?
  2. In Diborane, the B...H...B bonds are:
  3. Which type of chemical reaction involves the breakdown of a compound into two or more simpler substances?
  4. Reactive dyes form the following bonds with the fiber:
  5. Which of the following statement(s) is/are CORRECT?

    I. Carbon compounds linked by only single bond are called saturated compounds.

    II. Carbon compounds having double or triple bonds are called unsaturated compounds.

    III. Saturated carbon compounds are more reactive than unsaturated carbon compounds.

Need Expert Advice?
Upcoming Exams
SSC CPO
November 23, 2026
SSC CHSL
November 30, 2026
Test Series
SSC CGL img
SSC
SSC CGL (Tier I + Tier II) 2026 Mock Test Series - Latest Pattern
2509 Tests 6 Tests Free
8926 Attempts
4.2(945)
English, Hindi
More Questions from SSC CGL

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App