Advertisements
Advertisements
Question
Which fossil fuel is conserved when we save on electricity?
Solution
Coal is conserved when we save electricity.
APPEARS IN
RELATED QUESTIONS
Name two fossil fuels.
Name a clean gaseous fuel other than LPG and natural gas.
Fill in the following blanks with suitable words :
LPG is a ........... fuel but biogas is not a..........fuel.
Name the products of combustion of fossil fuels like coal and petroleum products. How do they affect us and our environment?
State any five steps to reduce the consumption of coal and petroleum products.
A man bought a device X which could cook pulses, vegetables and rice without using any fuel like wood, coal, kerosene or LPG, etc. This device did not work at night. It also took a lot of time for cooking.
(a) Name the device X.
(b) What is the source of energy which cooks food in this device?
(c) What is the name of the process which traps energy in this device?
(d) State one advantage (other than saving on fuel) or using such a device for cooking food.
List the products of combustion of fossil fuels. What are their adverse effects on the environment?
Match the following.
| Octane rating | Diesel |
| Cetane rating | Methane |
| Simplest hydrocarbon | Petrol |
| Peat | Bown in colour |
| Lignite | First stage coal |
You are provided with a mixture of petroleum and water. Can you suggest a method to separate the two?
We say fossil fuels will last only for a few hundred years. Comment.
