What is flame class 8

CBSE Class 8 Science Chapter 6 - Combustion and Flame is a crucial part of the syllabus of this subject. Students learn the different types of combustion reactions and flames here. To understand these concepts well and to use them for framing the right answers, download and solve the Class 8 Science Chapter 6 - Combustion and Flame Important Questions. Compare your answers to the solutions given for these questions and take your preparation to the next level. Develop your concepts and knowledge by practising solving these questions to score more in the exams. Significance of CBSE Class 8 Science Chapter 6 - Combustion and Flame Important Questions Combustion is a type of chemical reaction. We generally interpret it as burning but there is much more to its concepts. Chapter 6 of the Class 8 Science syllabus is all about what combustion is and how many types of combustion are there. This chapter explains the different types of combustion by using proper examples. Hence, students will learn the fundamental concepts of combustion and flames in this chapter and will proceed to solve the exercises. Once the exercises are solved, students will need the right platform to assess their preparation level. They download and solve the Class 8 Science Chapter 6 Important Questions developed by the subject experts of Vedantu. These questions have been framed by following the CBSE Class 8 Science level so that students can easily comprehend their contexts and can frame the right answers. ...

NCERT Solutions Class 8 Science Chapter 6 Combustion and Flame is one of the most important aspects of study for students pursuing Science. The ignition and fire arrangements given here can assist understudies with setting up the subjects in an intuitive way. Understudies concentrating in Class 8 are likewise encouraged to examine the NCERT course readings and fathom the given inquiries for a superior comprehension of the themes and subtopics. Check the arrangements given to clear any questions in a flash. This NCERT Solution has answers to the inquiries on burning, kinds of burnings, the function of oxygen in burning, start temperature, inflammable substances, control of fire, definition and various zones of fire, risky contaminations, corrosive downpour and its belongings. Points Covered in Class 8 Science Chapter 6 • Combustible compounds are those that burn in the presence of air. • Combustion requires oxygen (which is found in the air). Heat and light are emitted during the combustion process. The lowest temperature at which a flammable material ignites is called the ignition temperature. • Combustible substances have a low ignition temperature. Fire may be tamed by eliminating one or more of the conditions that cause it to burn. • Water is frequently used to put out flames. Water cannot be used to put out flames caused by electrical appliances or lubricants. • Rapid combustion, spontaneous combustion, explosion, and more forms of combustion exist. A flame may be divi...

According to the CBSE Syllabus 2023-24, this chapter has been renumbered as Chapter 4. Introduction Combustion • A chemical process in which a substance reacts with oxygen to give off heat and light is called combustion. • The burning of wood is an example of combustion. Combustible and Non-Combustible Substances • Substances which easily catch fire are combustible substances, such as paper, coal, and wood. • Substances which do not catch fire readily are non-combustible substances, such as sand, water, and glass. To know more about Combustion Type, History of Wood and Candle Flame Fuel • Any substance, upon combustion, produces a usable amount of energy known as fuel. For example, fossil fuels, biogas, nuclear energy, etc. • Fuels can be solid, liquid or gas, depending on their state. • On the basis of their occurrence, it can be either natural or artificial. For more information on History of Candle Flame, watch the below video Ignition Temp The lowest temperature at which a combustible substance catches fire when heated in air is called its ignition temperature. Inflammable Substances The substances which have very low ignition temperatures and can easily catch fire with a flame are known as inflammable substances, for example, diesel, LPG, and acetone. Fire • Fire is the result of a chemical combustion reaction between oxygenand some sort of fuel.​​​​​​ • How long a fire lasts depends on how much fuel and oxygen are available. Candle Flame Fire Triangle For the generat...

Combustion and Flame Class 8 Science Chapter 6 as per NCERT Book used in CBSE and other Schools. The lesson covers the complete explanation of class 8 Chapter 6 Combustion and Flame . Topics covered are combustion, flame and fuels. Difference between types of fuels has been explained. The lesson covers all important questions based on combustion and flame. The lesson also has a look at combustible and non-combustible substances. NCERT book solutions have also been provided for convenience of the students. Combustion Flame Types of Fuel Types of combustion Fuel Global Warming Fire Extinguisher Acid Rain NCERT Book Solutions The topics we will cover in this chapter are as follows: • Combustion • Flame • Fuels Introduction As we know that we need energy to do our routine works. This energy is obtained in the form of food, burning fuels and electricity. This energy is used for cooking, as fuel in vehicles and also in industries. We know that coal and petroleum are non-renewable because they take thousands of years to form. Also, energy is in high demand due to the increase in population and this need is fulfilled by using non renewable resources. Due to this, non renewable resources are in danger as they can get exhausted. So, to overcome this problem, scientists are trying to discover other resources that can be useful in place of non renewable resources. Combustion Burning of any substance is defined as combustion. Combustion is defined as a chemical change in which both hea...

NCERT Solutions for Class 8 Science Chapter 6 Combustion and Flame Topics and Sub Topics in Class 8 Science Chapter 6 Materials combustion and flame: Section Name Topic Name 6 Materials combustion and flame 6.1 What is Combustion? 6.2 How Do We Control Fire? 6.3 Types of Combustion 6.4 Flame 6.5 Structure of a Flame 6.6 What is a Fuel? 6.7 Fuel Efficiency Combustion and Flame Class 8 Science NCERT Textbook Questions Question 1. List conditions under which combustion can take place. Answer: Combustion can take place in the presence of: (a) a combustible substance. (b) oxygen, that is, the supporter of combustion. (c) attainment of ignition temperature of the substance. Question 2. Fill in the blanks. (a) Burning of wood and coal causes _____ of air. (b) A liquid fuel, used in homes is ______ (c) Fuel must be heated to its ______ before it starts burning. (d) Fire produced by oil cannot be controlled by ______ Answer: (a) pollution (b) LPG (c) ignition temperature (d) water Question 3. Explain how the use of CNG in automobiles has reduced pollution in our cities. Answer: The use of CNG in automobiles has reduced pollution in our cities as it is a quality fuel and has some benefits: (a) It gives out less carbon dioxide gas, carbon monoxide gas, sulphur dioxide and nitrogen dioxide, which is beneficial as they play crucial role in global warming and acid rain. (b) It leaves behind no residue after its combustion. Question 4. Compare LPG and wood as fuels. Answer: LPG Wood (i) ...

One of the most critical issues for architects is ensuring that building design addresses fire-safety issues. The science of fire safety engineering has advanced greatly over the years to give us an in-depth understanding of the critical stages of fire initiation, growth, containment and suppression. Such knowledge has enabled today’s building codes and fire protection engineers to provide fire safe structures for our homes and cities. Heat, fuel and an oxidizing agent, usually oxygen, must all be present for ignition to occur. The fire triangle graphic below defines the conditions needed for a fire to start but a fourth condition must be added to sustain the fire and allow it to grow. This is illustrated by the fire tetrahedron shown below, which shows how heat, fuel, oxidizer and an exothermic chain reaction together can trigger a building conflagration. There are two types of methods of suppression used in building fire safety design: Passive and Active. Passive suppression uses materials, systems, building elements, and/or building layout to prevent or resist ignition, to limit its spread to other combustible contents in the room and to contain the fire within the room or zone to prevent its spread to other sections of the structure. Active suppression is the employment of mechanical devices such as sprinklers or extinguishers to extinguish the fire in its early stages and thus prevent its spread. Passive suppression uses the natural properties of materials and product...