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प्रश्न
Which fossil fuel is conserved when we use bicycle for covering short distances instead of a motorbike?
उत्तर
Petroleum is conserved when we use a bicycle for covering short distances instead of a motorbike.
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संबंधित प्रश्न
Process of separation of different constituents from petroleum is called ______.
Kerosene is not a fossil fuel.
The poisonous gas which reduces the oxygen-carrying capacity of blood to a large extent is :
(a) SO2
(b) NO
(c) CO
(d) CO2
Which of the following combination of terms has no fossil fuel?
(a) wind, ocean, coke
(b) kerosene, tide, wind
(c) wood, wind, sun
(d) petrol, wood, sun
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?
Write two disadvantages of burning fossil fuels.
Match the following.
| Octane rating | Diesel |
| Cetane rating | Methane |
| Simplest hydrocarbon | Petrol |
| Peat | Bown in colour |
| Lignite | First stage coal |
Which of the following is not a constituent of petroleum?
You are provided with a mixture of petroleum and water. Can you suggest a method to separate the two?
Write some important uses of the various constituents of petroleum.
