Wired Faculty
Sponsor Area
Why is coke considered a better fuel than coal ? Give four reasons.
(i) Coke burns without producing smoke whereas coal produces a lot of smoke on burning
(ii) Coke has a higher calorific value than coal.
(iii) Coke burns more readily than coal.
(iv) Coke leaves much less ash in burning as compared to coal.
CNG is more polluting fuel than petrol.
Coke is almost pure form of carbon.
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.
Sponsor Area
Mock Test Series
