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Our ncert solutions for Solutions 5. Coal And Petroleum - Text Book Exercise | Class 8 Science - Toppers Study is the best material for English Medium students cbse board and other state boards students.

 

Solutions ⇒ Class 8th ⇒ Science ⇒ 5. Coal And Petroleum

Solutions 5. Coal And Petroleum - Text Book Exercise | Class 8 Science - Toppers Study

Topper Study classes prepares ncert solutions on practical base problems and comes out with the best result that helps the students and teachers as well as tutors and so many ecademic coaching classes that they need in practical life. Our ncert solutions for Solutions 5. Coal And Petroleum - Text Book Exercise | Class 8 Science - Toppers Study is the best material for English Medium students cbse board and other state boards students.

5. Coal And Petroleum

| Text Book Exercise |

Solutions 5. Coal And Petroleum - Text Book Exercise | Class 8 Science - Toppers Study


Text Book Exercise:


Q5. Tick True/False against the following statements :

(a) Fossil fuels can be made in the laboratory. (T/F)

(b) CNG is more polluting fuel than petrol. (T/F)

(c) Coke is almost pure form of carbon. (T/F)

(d) Coal tar is a mixture of various substances. (T/F)

(e) Kerosene is not a fossil fuel. (T/F)

Answer : (a) (F), (b) (F), (c) (T), (d) (T), (e) (F).

Q6. Explain why fossil fuels are exhaustible natural resources.

Answer : Fossil fuels are present in nature in limited quantity and are being exhausted abundantly by us. That is why fossil fuels are called exhaustible natural resources.

Q7. Describe characteristics and uses of coke.

Answer : Coke is a tough porous black substance. It is almost pure form of carbon. It is used in the manufacture of steel and in the extraction of many metals. 

Q8. Explain the process of formation of petroleum.

Answer : Petroleum is formed from organisms living in the sea. When these organisms died, their bodies settled and the bottom of the sea and got coverd with layers of sand and clay. Over millions of years, they were transformed into petroleum, oil and natural gas under the absence of air and presense of high temperature and high pressure. 

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Solutions ⇒ Class 8th ⇒ Science
1. Crop Production And Management
2. Microorganisms : Friend And Foe
3. Synthetic Fibres And Plastics
4. Materials : Metals And Non-Metals
5. Coal And Petroleum
6. Combustion And Flame
7. Conservation of Plants And Animals
8. Cell - Structure and functions
9. Reproduction in animals
10. Reaching the age of adolescence
11. Force And Pressure
12. Friction
13. Sound
14. Chemical Effects of Electric Current
15. Some Natural Phenomena
16. Light
17. Stars And The Solar System
18. Pollution of Air and Water

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