LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
62 views
in General by (30.0k points)
closed by
By which of the following can petrol fire be extinguished ?
1. Sand 
2. Water
3. Carbon dioxide 
4. Saw dust

1 Answer

0 votes
by (54.3k points)
selected by
 
Best answer
Correct Answer - Option 3 : Carbon dioxide 

The Correct Answer is Carbon dioxide.

 

  • CO2 fire extinguishers contain pure carbon dioxide, which is a residue-free extinguisher.
  • Recommended for use on live electrical equipment and suitable for Class B flammable liquid fires (petrol, tar, solvents).
  • In 1924, the Walter Kidde Company invented the carbon dioxide (CO2) extinguisher in response to Bell Telephone's request for an electrically non-conductive chemical for extinguishing previously difficult-to-extinguish fires in telephone switchboards.
  • Carbon dioxide works to put out fires by displacing oxygen. It was once thought that it worked by cooling the fire, but this effect is insignificant in most cases.

  • Sand extinguishers are used to put out flammable metal fires (class D fires) by actually smothering them.
  • Water fire extinguishers penetrate burning materials, providing a cooling effect and preventing reignition. They are ideal for use on class A solid combustible fires (wood, paper, fabrics, coal).

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...