Extinguishing a Fire
Extinguishing a Fire
Fire can be controlled by removing any one or more of these conditions. A fire extinguisher cuts off the supply of air or brings down the temperature of the fuel or both and controls the fire.
Fire can be controlled and extinguished by :-
1. Removing any combustible materials near the region of fire.
2. Cutting off the supply of air by using sand or blanket.
3. Bringing down the ignition temperature by using water.
Fuel in most cases cannot be eliminated. If for instance, a building catches fire, then the whole building is the fuel.
Fire can be extinguished using water :-
Water evaporates, taking away heat from the fire, which in turn cools down the burning materials below its ignition temperature. However, water is dangerous in most of the cases:
Carbon dioxide fire extinguisher consist of carbon dioxide filled under high pressure in cylinders. It is not a supporter of combustion .Being heavier than air; carbon dioxide settles down and cut off the supply of oxygen which extinguishes the fire.
When released from cylinders, expands enormously in volume and cools down. So, it not only forms a blanket around the fire, it also brings down the temperature of the fuel.
Soda Acid Fire Extinguisher : It contain concentrated solution of sodium hydrogen carbonate and sulphuric acid and in separate compartments.
Fire extinguishers cannot be used to put out electrical fires, due to the presence of ________________________ | |||
| Right Option : C | |||
| View Explanation | |||
Mark the correct statement (s) among the following. A. Water is a very good fire extinguisher as it cools down the fuels such as wood below its ignition temperature. B. Water is a very good fire extinguisher for burning oils and electrical equipments since it covers the surface of oils. C. Sand and soil may act as a good fire extinguisher for burning oils. | |||
| Right Option : D | |||
| View Explanation | |||
Water is used to extinguish fire because it __________________ | |||
| Right Option : B | |||
| View Explanation |
Students / Parents Reviews [10]
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
