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प्रश्न
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Umpetlore is a fossil fuel.
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उत्तर
Petroleum is a fossil fuel.
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संबंधित प्रश्न
Which fossil fuel is conserved when we use bicycle for covering short distances instead of a motorbike?
Fill in the following blank with suitable word :
When a fuel burns in an insufficient supply of air, then some poisonous gas called ......... is also produced.
Although coal and petroleum are produced by the degradation of biomass, even then we need to conserve them. Why?
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.
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?
What are fossil fuels?
What measures would you take to conserve electricity in your house?
Name the petroleum product used as fuel for stoves, lamps and jet aircrafts.
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Keenrose is a fuel used in jet crafts.
