What are the advantages of using CNG and LPG as fuels?
Name the petroleum product used for surfacing of roads.
Describe how coal is formed from dead vegetation. What is this proces
zercises
called?
Answers
Answer-1
The advantages of using CNG and LPG as fuels are as follows:
They both are cleanest burning fuels of all fossil fuels.
They are less polluting, non-corrosive.
They can be sent through pipes easily.
These are easily available and have affordable cost.
LPG and CNG both are easy to store and transport.
As there calorific value is very high therefore, they are used for cooking purpose.
Answer-2
The petroleum product used for surfacing roads is Bitumen.
Answer-3
About 300 million years ago when 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 got 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.
hope it helps you
1 ans - They both are cleanest burning fuels of all fossil fuels.
They are less polluting, non-corrosive.
They can be sent through pipes easily.
These are easily available and have affordable cost.
LPG and CNG both are easy to store and transport.
2 - Bitumen
3 - Coal was formed by the decomposition of large land plants and trees buried under the Earth about 300 million years ago. ... Due to high pressure and temperature and the absence of air, the wood of the buried forest plants and trees slowly got converted into coal.
HOPE IT HELPS ...