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प्रश्न
Match the following.
| Octane rating | Diesel |
| Cetane rating | Methane |
| Simplest hydrocarbon | Petrol |
| Peat | Bown in colour |
| Lignite | First stage coal |
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उत्तर
| Octane rating | Petrol |
| Cetane rating | Diesel |
| Simplest hydrocarbon | Methane |
| Peat | First stage coal |
| Lignite | Bown in colour |
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संबंधित प्रश्न
How can you as an individual contribute or make a difference to the management of coal and petroleum
Kerosene is not a fossil fuel.
Which of the following is not a natural resource?
(a) soil
(b) water
(c) electricity
(d) natural gas
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.
A person buys two electrical devices P and Q for lighting purposes in his house. The device P consumes only 5 units of electricity in a month but device Q consumes 15 units of electricity in a month when used for the same number of hours daily. The device Q wastes a lot of electricity by radiating energy C but P does not do so.
(a) What type of device is (i) P, and (ii) Q?
(b) Name one component which is present in Q but not in P.
(c) Name the energy C.
(d) Which device is more energy efficient : P or Q?
(e) Which fossil fuel is most likely to be conserved if all of us switch over to devices like P?
While discussing about coal and petroleum a teacher told his students about PCRA's (Petroleum Conservation Research Association) guidelines to save the fossil fuels while driving vehicles. Deepa was going to her school with her mother who was driving car. At the traffic signal, when the light was red, Deepa suggested her mother to switch of the engine.
After reading the above passage, answer the following questions :
(a) Fossil fuels are natural resources, then why do we need to conserve them?
(b) List any two ways of saving the fossil fuels.
(c) State two values exhibited to Deepa.
What is known as destructive distillation? Write about the products obtained from fractional distillation of petroleum.
Which of the following is not a constituent of petroleum?
Coal and petroleum are formed from the dead remains of organisms and are known as ______.
We read in newspapers that burning of fuels is a major cause of global warming. Explain why.
