Ans.To show the experiment we have to fix three lighted candle on a table, and put a glass chimney over it. However, if temperature of air is 35°C or more, phosphorus will catch fire without heating. Iron nail. In option (1) , if oxygen is highly combustible then it catch fire. 1) straw . Biogas. Under the supervision of your teacher try to burn each of these materials one by one. check and tell whether it is combustible or non- combustible . Answer:Hey friend ^_^ Here is your answer: Iron is a non combustible substance while petrol, coal and wood are combustible. Which, one of the following is a combustible substance? (a) Wood (b) Paper (c) Iron nails (d) Straw. Why should curd and sour substances not be kept in brown and copper vessels? Which, one of the following is a combustible substance? (a) Seldie is a combustible substance. A non combustible substance is that which is not capable of igniting and burning. compounds, elements. (a) iron nail (c) stone piece (b) glass (d) wood 2. It is physical change, no new substance is formed e.g., mixing of sulphur powder with iron Sling. Acid rain contains mainly (a) oxygen and nitrogen gas (b) fluorine and chlorine gas (c) magnesium oxide (d) nitrogen oxide and sulphur dioxide. ! Question 13. Non-combustible substances. i think it is not a combustible substance because it doesn't produce heat. More About Non Combustible Substances. It is a pure substance which is composed of two or more elements combined chemically in a fixed ratio such that they can be broken into elements only by chemical means. Question 25. (a) kerosene (c) LPG (b) biogas (d) petrol 3. Which one of the following has the highest calorific value? So, unless phosphorus is heated to 35 °C, it will not catch fire. Stone piece. Therefore, we see that a combustible substance cannot catch fire as long as its temperature is lower than its ignition temperature e.g. Answer: (d) nitrogen oxide and sulphur dioxide . air) • heating the combustible substances … Question 14. Iron, steel, water, dirt, cockroaches... What Is The Difference Between Combustible And Noncombustible Substances? (b) Those substances which do not burn are called non-combustible substance. 6) charcoal. A. iron nail B. glass C. stone piece D. wood. Iron nail is a non-combustible substance. 4) kerosene. 5)stone piece. Kerosene. pls mark it as brainliest By describing the shape, color, and state of the nail, you have listed several of its physical properties. Filed Under: Class 8, Combustion and Flame Tagged With: combustible substance, combustion, combustion of charcoal, combustion of magnesium, non-combustible substance, oxygen is supporter of combustion… Thus, wood is the right answer. When does a substance start burning ? Question 52 A. What Are The Examples Of Non Combustible Materials? Answer: In the sun, heat and light are produced by nuclear fusion actions. 2. (e) The substances which vapourise during _____, give flame. 1. Each constituent substance keeps its characteristics. you might describe an iron nail as a pointy-ended cylinder made of a dull, gray-colored solid. Question 15. A substance which reacts with oxygen giving heat is called a combustible substance. Question. 4 Which of the following is not a combustible substance? Answer: Ignition temperature is the minimum temperature at which combustion starts in a substance. A non-combustible substance is one which doesnot burn or catch fire on heating. of iron and so can also be made into a magnet. Some of the non-combustible substances are stone, glass, cement, soil, sand, iron nails, etc. 0 Upvotes 0 Upvotes 0 Downvotes. Iron is also found in abundance in space and is the last component to be produced with release of energy before the collapse of a supernova. (a) Camphor (b) Glass (c) Straw (d) Alcohol Answer. How is heat and light produced in the sun ? With the help of an experiment, show that oxygen (air) is necessary for the burning of a candle. Activity 6.2 (Caution : Be careful while handling burning candle). 1. Hope it helps u.Explanation:p… This substance has the symbol Fe and the atomic number 26 and is the most common element on Earth by mass, seeing as it constitutes a large part of the planet’s core and inner core. Any substance with a definite composition is a _____. • examples are stone,glass,cement,bricks,soil,sand,water,iron nails,copper,asbestos,etc., 5. conditions necessary for combustion:• presence of the combustible substances ( a substance which can burn) • presence of a supporter of oxygen ( i.e. Answer. Magnesium ribbon on burning in air produces (a) magnesium oxide, water and light (b) magnesium oxide and heat (c) magnesium oxide, heat and light (d) magnesium oxide, water and heat 4. combustible substances. Write them in their correct form. Answer: (c) Iron nails. Glass, iron nail and stone piece will not burn like wood hence they are not combustible. Iron, glass and stone piece do not react with oxygen to give heat. Wood burns in air and it Those substances which do not burn are called non-combustible substances. Give two examples of inflammable substances. (c) Chittsmack does not burn by itself. If these metals have not been turned into a permanent magnet they will still be attracted to a magnet if placed within a magnetic field. ***** No, examples of combustible substances are wood, paper, petrol, flour dust, etc. Explanation: Calorific represents the amount of heat generated when fuel burns completely. Which is non-combustible substance? Wood. Which one of the following has the highest calorific value? Question 2. For Ex: Stone,cement,glass,bricks,soil,sand,water,iron nails,copper objects. First of all, it’s important to know what iron really is. In option ( 3) oxygen is the supporter of fire but not the hydrogen. A non combustible substance is that which is not capable of igniting and burning. Matchstick, straw and charcoal are combustible. non-combustible substances:• those substances which do not burn are called noncombustible substances. (a) (i) State one other substance needed for iron to rust. What is meant by ‘combustion’? Q4: Identify the materials in which combustion can take place Wood, paper, kerosene oil, iron nails, brick, stone, charcoal. But the temperature of volcanic eruption is so high that even glass, iron nails and stone are broken down into smaller and smaller pieces, melt and then burn. Combustible substances are capable of catching fire, but non-combustibles are not... What are the examples of non compulsory insurance? Which of the following substance is not combustible: (a) matchstick (b) straw (c) charcoal (d) glass. Non-combustible material – A non-combustible material is a substance that does not ignite, burn, support combustion, or release flammable vapors when subject to fire or heat, in the form in which it is used and under conditions anticipated. Question. Is iron nail a combustible substance? combustible substance? See more. (ii) When iron rusts, a brown compound forms that can be represented by the formula Fe O State the name of this compound. There is a brown coating on the iron nail which was dipped in the copper sulphate solution, whereas the iron nail placed in petri dish shows greyish colour of iron. Explanation: Glass, iron nail and stone piece will not burn like wood hence they are not combustible. Water is needed for iron to rust. Iron nails: Non-combustible: Kerosene oil: Combustible: Stone piece: Non-combustible: Straw: Combustible: Charcoal: Combustible: Match sticks: Combustible: Glass: Non-combustible Q.25. They measured Combustible definition, capable of catching fire and burning; inflammable; flammable: Gasoline vapor is highly combustible. :) incorrect answer will be reported !! Insurance Non- combustible substances – iron nails, stone pieces, glass. Those substances which do not burn are called non-combustible substances. 2. 3)iron nail. Engineering Science. Matter that has neither a definite volume nor a definite shape is in the _____ state. 2) wood . Which, one of the following is a combustible substance? i think it is not a combustible substance because it doesn't produce heat. Paper, clothes, wood, LPG are allcombustible substances. Answer: A chemical process in which a substance reacts with the oxygen to give heat and light is called combustion. Without these substances, a fire cannot be started. The oxygen in air causes iron to rust. (b) Slags is a non-combustible material. If combustion takes place mark the material combustible, otherwise mark it as non-combustible (Table 1). (a) kerosene (b) biogas (c) LPG (d) petrol. LPG. Ignition temperature of phosphorus is 35 °C. In option (2) hydrogen is a combustible substance but not oxygen. Explain with an example. Non-combustible substances – iron, nails, glass. Substances that burn easily or catch fire easily are calledcombustible substances. Table 1 Combustible and noncombustible Substances Answer: A substance starts burning when its ignition temperature is reached. Some physical properties can be measured. Answer: A substance that has the ability to produce smoke when it is heated is known is known as a combustible substance. Answer. Petrol. reactants. Then how do we live, moreover hydrogen is a combustible substance. 8)glass. 7) matchsticks. For Ex: Stone, cement, glass, bricks, soil, sand, water, iron nails, copper objects. Answer (d) glass Glass is not combustible. The melting of butter is a _____ change because it does not produce any new substances. Fix a lighted candle on a table. Soln: Answer is (c) LPG. 10 Explosive Chemicals Examples - Substances - Dangers In laboratories, there are many ingredients of dangerous chemicals, starts from corrosive, poisonous, easy to burn, easy to explode chemicals and there are much impact of dangerous chemicals. Some words (underlined) in the following sentences are jumbled up. Wood burns in air and it is called the combustible substance. Soln: Answer is (d) wood . Question 4: What is ignition temperature? Chemistry. Question 5: What is an inflammable substance? Iron and oxygen are _____ in this process, and rust is the product. gaseous. Answer: D. Combustible Substance. Report Abuse; Comment; Related Questions. (d) Some substances on combustion produce thea and mafel. Collect some materials like straw, matchsticks, kerosene oil, paper, iron nails, stone pieces, glass, etc. Glass. For instance, you could use a metric ruler to measure on property of the nail—its length. Compound. correct answer will be given by 100 points and marked as brainliest. Combustible substance – straw. Loading image • • • Question 2: Which one of the following has the highest calorific value? The colour of the copper sulphate solution in which the iron nail was dipped turns light greenish, whereas the solution of copper sulphate in the other test tube does not change. A substance which reacts with oxygen giving heat is called a combustible substance. Answer: A substance which cannot undergo combustion is called a non-combustible substance. chemical. Question 15. (1) (b) Three students decided to investigate the rusting of some iron nails. (a) iron nail (b) glass (c) stone piece (d) wood. Glass, iron nails and stone are examples of non-combustible substances. 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