CBSE Class 8 Science Combustion and Flame Worksheet Set D

Read and download free pdf of CBSE Class 8 Science Combustion and Flame Worksheet Set D. Download printable Science Class 8 Worksheets in pdf format, CBSE Class 8 Science Chapter 6 Combustion and Flame Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Science Class 8 Assignments and practice them daily to get better marks in tests and exams for Class 8. Free chapter wise worksheets with answers have been designed by Class 8 teachers as per latest examination pattern

Chapter 6 Combustion and Flame Science Worksheet for Class 8

Class 8 Science students should refer to the following printable worksheet in Pdf in Class 8. This test paper with questions and solutions for Class 8 Science will be very useful for tests and exams and help you to score better marks

Class 8 Science Chapter 6 Combustion and Flame Worksheet Pdf

DEPARTMENT OF SCIENCE

SUBJECT: SCIENCE

TOPIC : Combustion and flame 
 
I. Answer the following.
 
1. Why do we wrap a blanket around a person who caught fire?
 
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2. Charcoal does not burn with a flame but glows. Why?
 
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3. The calorific values of petrol and CNG are 45, 000 KJ/Kg and 50,000 KJ/Kg respectively. If you have a vehicle which can run on petrol as well as CNG, which fuel you will prefer and why?
 
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4. Why is it easier to burn dry leaves but not green leaves?
 
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5. A flame always points upwards. Why do you think this is so?
 
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6. Food is the fuel for our body. Justify this statement.
 
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7. What is flame?
 
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8. In an experiment 3.5 kg of fuel was completely burnt. The heat produced was measured to be 160,000 KJ. Calculate the calorific value of the fuel.
 
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9. Why do we say increasing fuel consumption has harmful effects on environment?
 
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10. Name the three different kinds of combustion.
 
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11. What do you mean by ignition temperature? Why should we store kerosene oil with proper care?
 
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12. The calorific value of hydrogen is the most. It is not used as a domestic fuel. Why? Give an example where hydrogen is used as a fuel.
 
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KNOW ABOUT BIOGAS
 
Biogas typically refers to a mixture of different gases produced by the breakdown of organic matter in the absence of oxygen. Biogas can be produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or food waste. Biogas mainly consists of methane. Biogas is a renewable energy source. it is used as a fuel for any heating purpose, such as cooking. It can also be used to generate electricity.

 

 

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CBSE Class 8 Science Chapter 6 Combustion and Flame Worksheet

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Chapter 6 Combustion and Flame worksheet Science CBSE Class 8

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Chapter 6 Combustion and Flame CBSE Class 8 Science Worksheet

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