Carbon dioxide is heavier than oxygen, covers the fire like a blanket. EASY. … Questions of this type are frequently asked in competitive entrance exams … Answers (1) H Harsh Kankaria. Answer: As CO2 is heavier than oxygen, it forms a blanket around fire, because of which the supply of air is stopped. 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. Explain how CO2 is able to control fires. http://www.cbselabs.com/Explain How CO2 Carbon Dioxide is able to control fires Q27. There is about 400 parts per million volume (ppmv) now. Teachoo provides the best content available! Explain how CO 2 is able to control fires. 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 Learn Science with Notes and NCERT Solutions. You may need to download version 2.0 now from the Chrome Web Store. It is difficult to burn a heap of green leaves but dry leaves catch fire easily. How is CO2 able to control fires? (a) Burning of wood and coal causes _________ of air. Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not. When E/R control room electrical fire breaks out, we must use CO2 portable fire extinguisher, because CO2 is electrical non-conductor. When the liquid carbon dioxide inside the extinguisher expands into a gas, the carbon dioxide pushes out any oxygen surrounding the fire. Name the unit in which the calorific value of a fuel is expressed. 1 Thank You It is difficult to burn a heap of green leaves but dry leaves catch fire easily. Fill in the blanks. How does a CO2 Fire Suppression System Put Out a Fire? Since the contact between the fuel and oxygen is cut off, the fire is controlled. Explain how CO2 is able to control fires. Cellular respiration breaks down glucose and O2 into CO2 and H2O. plus 459 more questions from Biology. Question 9. Another way to prevent getting this page in the future is to use Privacy Pass. A fire needs oxygen, fuel, and heat to continue to burn. He provides courses for Maths and Science at Teachoo. 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." 2 Explain. He has been teaching from the past 9 years. Ans. Your IP: 91.134.243.191 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 … 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. The amount is growing as burning fossil fuels releases carbon dioxide into the atmosphere. By eliminating one of these three elements, a fire can be suppressed or extinguished. In these ways, it plays a significant role in controlling fire. Answer. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Login to view more pages. Explain. Performance & security by Cloudflare, Please complete the security check to access. Explain how carbon dioxide is able to control fires. CO2, being heavier than oxygen, covers the fire like a blanket. Earth’s land and ocean surfaces continuously radiate thermal infrared energy (heat 2)Carbon dioxide gas neither burns itself nor supports burning. Answer: Carbon dioxide is the best fire extinguisher to put out fire caused by inflammable materials like oil and petrol and electrical equipments. Carbon dioxide or CO 2 is a colorless, odorless, electrically non-conductive gas that is highly efficient as a fire suppression agent. 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. Carbon dioxide is an odorless, colorless gas that is present in the air. 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. The cutting of supply of oxygen prevents the combustion of fuel like oil and petrol. Fire breaks wood and O2 into heat, CO2, and ash. Check the condition of fire and cut out the power if is possible. (a) Burning of wood and coal causes _________ of air. 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. Q. is heavier than . Without oxygen available to fuel the chemical reaction, the fire goes out quickly. CO 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. … When released, it expands enormously and cools down. 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. Explain how is able to control fires. 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. When carbon dioxide is released, it expands enormously and cools down. Fill in the blanks. 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 … It depends on the energy of dissociation of the molecule, that is, how difficult it is to oxidize the bond within the molecule. Carbon dioxide extinguishers work because carbon dioxide molecules are heavier than oxygen molecules. The carbon dioxide gas acts as a fire extinguisher. CO2, being heavier than oxygen, covers the fire like a blanket. Teachoo is free. Men over, it brings down the temperature of the burning substance. Cloudflare Ray ID: 6147fa59c952692a (b) A liquid fuel used in … Catabolic: Breaking down substances, usually releasing energy. 8. 2) In cylinders, CO2 is kept in the liquid form. Explain how CO2 is able to control fire. Since the contact between the fuel and oxygen is cut off, the fire is controlled. In cylinders, CO2 is kept in liquid form. # NCERT. 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. While some suppression agents reduce the heat of the fire, a CO2 fire suppression system eliminates the oxygen to suppress the fire. Terms of Service. 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. 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. With more atmospheric carbon dioxide available to convert to plant matter in photosynthesis, plants were able to grow more. Of the special hazard applications, approximately 20 percent of the … 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. Since the contact between the fuel and oxygen is cut off, the fire is controlled. (b) A liquid fuel used in … Explanation: The carbon dioxide is a heavier gas that suppresses the oxygen that acts as a combustion agent. Make a labelled diagram of a candle flame. • Therefore, it acts as a blanket over the substance and cuts off the oxygen supply required for combustion. • According to industry consensus, special hazard applications comprise approximately 20 percent of total fire protection applications. People and animals breathe in oxygen from the air and exhale carbon dioxide. Explain how, carbon dioxide is able to control fires? Explain. On signing up you are confirming that you have read and agree to Methane: A powerful greenhouse gas, able to absorb far more heat than carbon dioxide, methane is made of one carbon and four hydrogen atoms. Carbon dioxide is heavier than air and it covers the fire and cuts off the supply of oxygen and puts out the fire. The carbon dioxide gas is stored at high pressure in the form of liquid in cylinders. Answer: Carbon dioxide is heavier than oxygen. First give the fire alarm signal. Carbon Dioxide extinguishers are filled with non-flammable carbon dioxide gas under extreme pressure. Post Answer. Please enable Cookies and reload the page. Explain how CO2 is able to control fires. How to extinguish small control room electrical fire ? Due to this, carbon dioxide forms a blanket around the burning material and makes a barrier between the burning material and oxygen. The added advantage of CO2 is that in most cases it does not harm the electrical equipment. 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. 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. For fires involving electrical equipment and inflammable materials like petrol, carbon dioxide (CO2) is the best extinguisher. Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. 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