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प्रश्न
The term petroleum means ________
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उत्तर
The term petroleum means Rock oil.
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संबंधित प्रश्न
Which fossil fuel is conserved when we use bicycle for covering short distances instead of a motorbike?
Choose one term from the following which include all others :
coal, natural gas, fossil fuels, petroleum
State any five steps to reduce the consumption of coal and petroleum products.
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 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.
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.
Which of the following is not a constituent of petroleum?
We say fossil fuels will last only for a few hundred years. Comment.
Give reason for the following:
Petroleum is considered a harmful source of energy.
