Wired Faculty
Sponsor Area
What happens when coal is heated in the absence of air? Name this process. Write the name of the two products obtained during this process.
When coal is heated in the absence of air, it breaks up and provides a large number of organic compounds and some inorganic compounds.The process is known as destructive distillation of coal.
In this process coal tar and coal gas can obtained.
Coal-tar is a mixture of various substances.
Kerosene is not a fossil fuel.
Explain why fossil fuels are exhaustible natural resources?
Describe characteristics and uses of coke.
Explain the process of formation of petroleum.
The following Table shows the total power shortage in India from 1991-1997. Show the data in the form of a graph. Plot shortage percentage for the year on the Y-axis and the year on the X-axis.
|
1 |
Year 1991 |
Shortage % 7.9 |
|
2 |
1992 |
7.8 |
|
3 |
1993 |
8.3 |
|
. 4 |
1994 |
7.4 |
|
5 |
1995 |
7.1 |
|
6 |
1996 |
9.2 |
|
7 |
1997 |
11.5 |
Name two each of the exhaustible and inexhaustible natural resources.
Write the name of two natural substances.
Why are air, water and soil called natural resources?
Why are coal, petroleum and natural gas called fossil fuels?
Sponsor Area
Mock Test Series
