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प्रश्न
Petroleum was formed from organisms
विकल्प
living on the land
living on the plants
living in the sea
living on the rocks
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उत्तर
living in the sea
Explanation:
Petroleum was formed by the decomposition of the remains of tiny plants and animals buried under the sea millions of years ago.
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संबंधित प्रश्न
How can you as an individual contribute or make a difference to the management of coal and petroleum
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?
Which of the following is not a natural resource?
(a) soil
(b) water
(c) electricity
(d) natural gas
There are two important fuels A and B both of which are extracted from deep inside the earth. Fuel A is a thick, dark, foul smelling liquid whereas fuel B is a black solid. Combustion of both the fuels produces products, C, D, E and F. The product C makes the rainwater only slightly acidic but it is mainly responsible for causing global warming. The product D is neither acidic nor basic. It is harmless and does not affect the environment in any way. Both E and F attack breathing system of humans and are mainly responsible for causing acid rain. In addition to combustion of fuels A and B, the product F is also formed when lightning occurs in the sky.
(a) What are (i) fuel A, and (ii) fuel B?
(b) Name (i) C (ii) D (iii) E, and (iv) F
(c) What is the process of formation of F during lightning known as?
(d) Which fuel is supposed to be exhausted sooner : A or B?
(e) Which fuel is mostly used for generating electricity at thermal power plants?
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?
List the products of combustion of fossil fuels. What are their adverse effects on the environment?
Write an answer to the following question in your own words.
Make a list of the components we obtain from mineral oil.
What measures would you take to conserve electricity in your house?
Coal and petroleum are formed from the dead remains of organisms and are known as ______.
