About 300 million years ago the earth had dense forests in low lying wetland areas. Due to natural processes, like flooding, these forests got buried under the soil. As more soil deposited over them, they were compressed. The temperature also rose as they sank deeper and deeper. Under high pressureRead more
About 300 million years ago the earth had dense forests in low lying wetland areas. Due to natural processes, like flooding, these forests got buried under the soil. As more soil deposited over them, they were compressed. The temperature also rose as they sank deeper and deeper. Under high pressure and high temperature, dead plants got slowly converted to coal.
As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonisation.
The advantages of using CNG and LPG as fuels are: • They are used as non-polluting fuels to transport vehicles. • LPG and CNG both are easy to store and transport. • CNG is used for power generation. • These fuels have more energy per unit volume. • LPG can be used directly for burning in homes andRead more
The advantages of using CNG and LPG as fuels are:
• They are used as non-polluting fuels to transport vehicles.
• LPG and CNG both are easy to store and transport.
• CNG is used for power generation.
• These fuels have more energy per unit volume.
• LPG can be used directly for burning in homes and factories.
• These are easily available and have affordable cost.
• LPG and CNG has virtually no ash particles left after burning.
Fossil fuels are ___________, __________ and ___________.
Fossil fuels are Natural Gas, Coal and Petroleum. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-5/
Fossil fuels are Natural Gas, Coal and Petroleum.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-5/
See lessDescribe how coal is formed from dead vegetation. What is this process called?
About 300 million years ago the earth had dense forests in low lying wetland areas. Due to natural processes, like flooding, these forests got buried under the soil. As more soil deposited over them, they were compressed. The temperature also rose as they sank deeper and deeper. Under high pressureRead more
About 300 million years ago the earth had dense forests in low lying wetland areas. Due to natural processes, like flooding, these forests got buried under the soil. As more soil deposited over them, they were compressed. The temperature also rose as they sank deeper and deeper. Under high pressure and high temperature, dead plants got slowly converted to coal.
As coal contains mainly carbon, the slow process of conversion of dead vegetation into coal is called carbonisation.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-5/
See lessName the petroleum product used for surfacing of roads.
Bitumen is the petroleum product used for surfacing of roads. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-5/
Bitumen is the petroleum product used for surfacing of roads.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-5/
See lessWhat are the advantages of using CNG and LPG as fuels?
The advantages of using CNG and LPG as fuels are: • They are used as non-polluting fuels to transport vehicles. • LPG and CNG both are easy to store and transport. • CNG is used for power generation. • These fuels have more energy per unit volume. • LPG can be used directly for burning in homes andRead more
The advantages of using CNG and LPG as fuels are:
• They are used as non-polluting fuels to transport vehicles.
• LPG and CNG both are easy to store and transport.
• CNG is used for power generation.
• These fuels have more energy per unit volume.
• LPG can be used directly for burning in homes and factories.
• These are easily available and have affordable cost.
• LPG and CNG has virtually no ash particles left after burning.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-5/
See less