Advertisements
Advertisements
प्रश्न
Explain the process of formation of petroleum.
Advertisements
उत्तर
Petroleum was formed from organisms living in the sea. As these organisms died, their bodies settled at the bottom of the sea and became covered with layers of sand and clay. Over millions of years, the absence of air, high temperature, and high pressure transformed the dead organisms into petroleum and natural gas.
APPEARS IN
संबंधित प्रश्न
Process of separation of different constituents from petroleum is called ______.
Which fossil fuel is conserved when we use bicycle for covering short distances instead of a motorbike?
Name a clean gaseous fuel other than LPG and natural gas.
Why should fossil fuels like coal and petroleum be used judiciously?
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?
Write two disadvantages of burning fossil fuels.
Write an answer to the following question in your own words.
Make a list of the components we obtain from mineral oil.
Petroleum, ______ and ______ are fossil fuels.
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.
