NCERT Solutions Class 7 English (Honeycomb) Chapter 8 Fire Friend and Foe – Here are all the NCERT solutions for Class 7 English Chapter 8. This solution contains questions, answers, images, explanations of the complete chapter 8 titled Fire Friend and Foe of English taught in class 7. If you are a student of class 7 who is using NCERT Textbook to study English, then you must come across chapter 8 Fire Friend and Foe. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 7 English Chapter 8 Fire Friend and Foe in one place.
NCERT Solutions Class 7 English Chapter 8 Fire: Friend and Foe
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Fire: Friend and Foe
NCERT Solutions Class 7 English chapter 8 Fire: Friend and Foe
Class 7, English chapter 8, Fire: Friend and Foe solutions are given below in PDF format. You can view them online or download PDF file for future use.
Fire: Friend and Foe
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Question & Answer
Q.1: Mark the correct answer in each of the following. (i) Early man was frightened of (a) lightning and volcanoes. (b) the damage caused by them. (c) fire. (ii) (a) Fire is energy. (b) Fire is heat and light. (c) Fire is the result of a chemical reaction.
Ans : (i) Early man was frightened of fire. (ii) Fire is the result of a chemical reaction.
Q.2: From the boxes given below choose the one with the correct order of the following sentences. (i) That is fire. (ii) A chemical reaction takes place. (iii) Energy in the form of heat and light is released. (iv) Oxygen combines with carbon and hydrogen.
Ans : (iv) (ii) (iii) (i)
Q.3: What do you understand by the ‘flash point’ of a fuel?
Ans : The temperature at which a fuel begins to burn is called its flash point.
Q.4: (i) What are some common uses of fire? (ii) In what sense is it a “bad master”?
Ans : (i) Some of the common uses of fire are to cook food, warm the homes in winter and to generate electricity. (ii) It is a “bad master” because if it is not kept under control, it can prove very dangerous. Each year thousands of homes and shops are damaged by fire. Vast areas of forest are also destroyed and hundreds of people are killed or injured.
Q.5: What are the three main ways in which a fire can be controlled or put out?
Ans : Fire can be controlled or put out by taking away one of the three things required for burning.The first way is to take away the fuel. If the fire has no fuel to feed on, no burning can take place.The second way is to prevent oxygen from reaching it. Small fires can be put out with a damp blanket or a sack. This stops oxygen from reaching the burning material. Sometimes carbon dioxide is used for extinguishing fire. The third way of putting out a fire is to remove the heat. If the temperature can be brought down below the flash point, the fuel stops burning. Blowing on a burning matchstick or a candle removes the hot air around the flame, bringing down its temperature below the flash point. Sometimes water is sprayed on a fire. It absorbs heat from the burning fuel and lowers the temperature. It also cuts off the supply of oxygen, and therefore, fire is extinguished.
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