How is CO2 able to control fires? Without oxygen available to fuel the chemical reaction, the fire goes out quickly. Explain. For fires involving electrical equipment and inflammable materials like petrol, carbon dioxide (CO2) is the best extinguisher. Of the special hazard applications, approximately 20 percent of the … Men over, it brings down the temperature of the burning substance. is heavier than . By eliminating one of these three elements, a fire can be suppressed or extinguished. Ans. Fire prevention and control, the prevention, detection, and extinguishment of fires, including such secondary activities as research into the causes of fire, education of the public about fire hazards, and the maintenance and improvement of fire-fighting equipment. Q27. While some suppression agents reduce the heat of the fire, a CO2 fire suppression system eliminates the oxygen to suppress the fire. Explain how CO 2 is able to control fires Answer CO 2 is able to control fire in 2 ways 1 Carbon Dioxide is heavier than oxygen When it is sprayed,it covers object like a blanket and cuts oxygen supply 2 Carbon dioxide does not harm electrical equipment Explain how carbon dioxide is able to control fires. CO2, being heavier than oxygen, covers the fire like a blanket. Methane: A powerful greenhouse gas, able to absorb far more heat than carbon dioxide, methane is made of one carbon and four hydrogen atoms. Explain how CO2 is able to control fires. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. People and animals breathe in oxygen from the air and exhale carbon dioxide. Performance & security by Cloudflare, Please complete the security check to access. Carbon dioxide is heavier than oxygen, covers the fire like a blanket. Teachoo provides the best content available! 2) In cylinders, CO2 is kept in the liquid form. Explain how is able to control fires. 8. When carbon dioxide is released, it expands enormously and cools down. The carbon dioxide gas acts as a fire extinguisher. Terms of Service. There is about 400 parts per million volume (ppmv) now. First give the fire alarm signal. He has been teaching from the past 9 years. CO2 being hevier than O2 covers the fire like blanket also brings down the temperature, Since contact between the fuel and oxygen cut off, and thus the fire come under control. CO2 is a non-combustible gas and extinguishes firein two ways: (i) Since it is heavier than oxygen, it covers the fire like a blanket and cuts off the contact between oxygen and fuel. He provides courses for Maths and Science at Teachoo. Fike Carbon Dioxide fire protection systems use intelligent, reliable and fast-acting control panels to quickly sense a fire before it can cause damage to property. According to industry consensus, special hazard applications comprise approximately 20 percent of total fire protection applications. Answer: Carbon dioxide is the best fire extinguisher to put out fire caused by inflammable materials like oil and petrol and electrical equipments. Explain how CO2 is able to control fires. When released, it expands enormously and cools down. • Learn Science with Notes and NCERT Solutions. CO2 is a non-combustible gas and extinguishes fire in two ways: 1) Since it is heavier than oxygen, it covers the fire like a blanket and cuts off the contact between oxygen and fuel. A carbon dioxide (CO 2) fire extinguisher is a portable, active fire protection device that works by expelling carbon dioxide onto a fire.It works by displacing the oxygen the fire relies upon to continue burning, and it is primarily used to extinguish fires in which the source of … Questions of this type are frequently asked in competitive entrance exams … Explain how CO2 is able to control fires. CO How does a CO2 Fire Suppression System Put Out a Fire? Check the condition of fire and cut out the power if is possible. (a) Burning of wood and coal causes _________ of air. plus 459 more questions from Biology. Fire protection applications generally can be divided into two basic categories: 1) applications that allow the use of water-based sprinklers and 2) special hazards that require the use of some other fire extinguishing agent such as carbon dioxide, halon, halon replacements, dry chemicals, wet chemicals, or foams. The cutting of supply of oxygen prevents the combustion of fuel like oil and petrol. Anabolic: Makes things more structured/organized such as the synthesis of protein from amino acids, photosynthesis of CO2 and H20 into Glucose and water, and growth. 2 Since the contact between the fuel and oxygen is cut off, the fire is controlled. • You can recognize a CO2 extinguisher by its hard horn and lack of pressure gauge. It is difficult to burn a heap of green leaves but dry leaves catch fire easily. The carbon dioxide gas is stored at high pressure in the form of liquid in cylinders. When E/R control room electrical fire breaks out, we must use CO2 portable fire extinguisher, because CO2 is electrical non-conductor. In these ways, it plays a significant role in controlling fire. Question 9. Explain. Explain how CO2 is able to control fire. Fill in the blanks. 2)Carbon dioxide gas neither burns itself nor supports burning. Fire breaks wood and O2 into heat, CO2, and ash. Carbon Dioxide is heavier than oxygenWhen it is sprayed,it covers object like a blanket and cuts oxygen supplyCarbon dioxide does not harm electrical equipmentIf water is sprayed on electrical equipment,it damages it and can cause short circuitHowever,there is no such effect if … Answer. On signing up you are confirming that you have read and agree to Name the unit in which the calorific value of a fuel is expressed. In cylinders, CO2 is kept in liquid form. Catabolic: Breaking down substances, usually releasing energy. It depends on the energy of dissociation of the molecule, that is, how difficult it is to oxidize the bond within the molecule. Answers (1) H Harsh Kankaria. Carbon dioxide or CO 2 is a colorless, odorless, electrically non-conductive gas that is highly efficient as a fire suppression agent. Cloudflare Ray ID: 6147fa59c952692a Carbon dioxide is an odorless, colorless gas that is present in the air. Your IP: 91.134.243.191 With more atmospheric carbon dioxide available to convert to plant matter in photosynthesis, plants were able to grow more. Login to view more pages. Explain how, carbon dioxide is able to control fires? You may need to download version 2.0 now from the Chrome Web Store. (a) Burning of wood and coal causes _________ of air. Due to this, carbon dioxide forms a blanket around the burning material and makes a barrier between the burning material and oxygen. Answer: CO2 is a non-combustible gas and extinguishes fire in two ways: Since it is heavier than oxygen, it covers the fire like a blanket and cuts off the contact between oxygen and fuel. Earth’s land and ocean surfaces continuously radiate thermal infrared energy (heat Make a labelled diagram of a candle flame. Carbon Dioxide extinguishers are filled with non-flammable carbon dioxide gas under extreme pressure. Teachoo is free. Answer: Carbon dioxide is heavier than oxygen. The added advantage of CO2 is that in most cases it does not harm the electrical equipment. Please enable Cookies and reload the page. EASY. (b) A liquid fuel used in … The amount is growing as burning fossil fuels releases carbon dioxide into the atmosphere. Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. When the liquid carbon dioxide inside the extinguisher expands into a gas, the carbon dioxide pushes out any oxygen surrounding the fire. Fill in the blanks. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. 1 Thank You Answer: As CO2 is heavier than oxygen, it forms a blanket around fire, because of which the supply of air is stopped. (b) A liquid fuel used in … Answer with step by step detailed solutions to question from HashLearn's Chemistry (CBSE 8), Crop Production and Management- "Explain how CO2 is able to control fires." Explain how CO 2 is able to control fires. Explanation: The carbon dioxide is a heavier gas that suppresses the oxygen that acts as a combustion agent. http://www.cbselabs.com/Explain How CO2 Carbon Dioxide is able to control fires Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not. Carbon dioxide is heavier than air and it covers the fire and cuts off the supply of oxygen and puts out the fire. This increased growth is referred to as carbon fertilization. Cellular respiration breaks down glucose and O2 into CO2 and H2O. Taking into consideration the above-mentioned limitations, carbon dioxide can be used in the is able to control fire in 2 ways, When it is sprayed,it covers object like a blanket and cuts oxygen supply, 2 Carbon dioxide does not harm electrical equipment, If water is sprayed on electrical equipment,it damages it and can cause short circuit, However,there is no such effect if carbon dioxide is sprayed, Subscribe to our Youtube Channel - https://you.tube/teachoo. Therefore, it acts as a blanket over the substance and cuts off the oxygen supply required for combustion. … Explain. Carbon dioxide extinguishers work because carbon dioxide molecules are heavier than oxygen molecules. 1)Carbon dioxide is denser than air and forms a layer around the burning substance.It covers the fire like a blanket due to which fresh air cannot reach the burning substance.The burning substance does not get oxygen of air and hence stops burning. It is difficult to burn a heap of green leaves but dry leaves catch fire easily. How to extinguish small control room electrical fire ? Q. Another way to prevent getting this page in the future is to use Privacy Pass. The pressure in the cylinder is so great that when you use one of these extinguishers, bits of dry ice may shoot out the horn. # NCERT. CO2, being heavier than oxygen, covers the fire like a blanket. A fire needs oxygen, fuel, and heat to continue to burn. … Post Answer. Saikrishna Behera, added an answer, on 21/9/14 CO 2 is a very good fire extinguisher because of the following reasons :- 1)It is stored in liquid form in cylinders in high pressure and when it is released it expands enormously in volume and covers the combustible substance and cuts - off the supply of air. Since the contact between the fuel and oxygen is cut off, the fire is controlled. Since the contact between the fuel and oxygen is cut off, the fire is controlled. 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