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name the two elements present in both cng and petroleum 

methane and nitrogen 

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CARBON and HYDROGEN....both are organic compounds.

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 carbon and hydrogen.

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SINCE BOTH CNG AND PETROLEUM R HYDROCARBONS,  HENCE, THE 2 ELEMENTS PRESENT WILL B CARBON AND HYDROGEN....   SIMPLE! 

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carbon and hydrogen and compound that is common is methane

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 carbon and hydrogen

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carbon and hydrgen

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Carbon and hydrogen......
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the 2 element areCarbon and Hydrogen............
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carbon jdjifjdbdjfjvgidjfjgjv oxide and hydrogen perojdjdudjhduhdfjvfff oxide
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methane  that is carbon and hydrogen
 
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carbon and hydrogen are the ones....
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so simple hydrogen and carbon 
 
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HYDROGEN and CARBON are present in both CNG and petroleum.
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Its hydrogen & carbon.
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the answer is carbon and hydrogen because methane that is CH4 , is present in both, CNG and petroleum

hope it helped 

thumbzzz up plzzzz
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Carbon and hydrogen
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CNG contains methane while petroleum has butane since both butane and methane are hydrocarbons , the elements present in cbc and petroleum are carbon and hydrogen.
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lol methane is an element for our lordship:D
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c and h
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carbon and hydrogen are the two elements present in both cng and petroleum.
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I think the answer for the question is CARBON and HYDROGEN ...
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carbon & hydrogen
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CarboN aNd  HydrogeN   are present in Both CNG and PetroleuM  ..
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petrol
 
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The very first which is present in every element that is CARBON and the second is HYDROGEN
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(i) Hydrogen(H2)
(ii) Carbon(CO2)
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carbon and hydrogen...
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My no. 9418425250 caal me girls
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Carbon and hyrogen present in cng and petroleum
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Two conventional source of energy are:- 1. fossil fuel 2. wind energy 3. coal & petroleum
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Yes Radhika is correct, Metals are the most important non renewable sources of energy other than Fossil Fuels (coal,petroleum, etc). This is a question of Lakhmir Singh's Book of Pg-121 (Physics-Class X)
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The process by which two or more nuclei of lighter atoms combine to form a heavy nucleus with the liberation of large amount of energy is called 'NUCLEAR FUSION 1H2 + 1H2 = 2He4 + Energy
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Carbon and hydrogen
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Hi da thambis
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Carbon and hydrogen are the two elements present in both cng and petroleum.
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Carbon and hydrogen are the two elements present in both cng and petroleum...
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The metal which can be compressed into thin sheet
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Carbon and hydrogen are the two elements present in both cng and petroleum.as both are hydrocarbons
 
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It is carbon and Hydrogen
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Carbon and hydrogen are the two elements present in both cng and petroleum.
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hi
 
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Conventional energy resources are those which are in use for centuries, i. e. they are used in large amounts by majority. E.g.. coal, petroleum, natural gas.these resources cause some environmental pollution. Non conventional energy resources include those renewable energy resources whose uses are not so popular. They have come into use recently and cause little or no environmental pollution.e.g. solar , wind, tidal, geothermal and nuclear energy.
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Hydrogen and Carbon
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Which is the environment friendly conventional source of energy?
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Hydrogen 😉 may be
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conventional source: they are the non renewable sources if energy.they can be easily exhaustable non conventional source:they are renewable sources of energy which can be easily exhaustable
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Carbon and hydrogen are the two elements present in both?cng?and petroleum.
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Cng 95percent methane and small constituents of butane and petroleum mainly contain butane and small constitutent of propane
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Both Cng and petroleum are either long or short chains of hydrocarbons , which clearly suggests their common elements i.e. carbon and hydrhydrogen 
hope you understood 
thumbs up if it helped😊😊
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its CARBON and HYDROGEN because they are made of organic compounds
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Carbon & Hydrogen
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Please find this answer

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Five harmful effect of Science and technology
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Carbon and Hydrogen
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carbon and hydrogen
 
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Carbon and hydrogen are the two element are present both in CNG and PETROLEUM
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SAME AS SHUBHAM
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Carbon and hydrogen
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Carbon and hydrogen because both CNG and petroleum contains methane gas in them which is nothing CH4
Hope it helps.......
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Carbon and hydrogen both are present in cng &petroleum
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Gaseous fuel
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Oxygen
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Hydrogen and Carbon are present in both CNG ans petroleum...
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Carbon and hydrogen are the two elements present in both CNG and petroleum
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SINCE BOTH CNG AND PETROLEUM R HYDROCARBONS, ?HENCE, THE 2 ELEMENTS PRESENT WILL B CARBON AND HYDROGEN.... ? SIMPLE!?
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Hydrogen and carbon
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Carbon and hydrogen are the two elements present in both CNG and petroleum
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Hydrogen & carbon are the 2 elements present in both cng & petroleum
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Carbon and hydrogen
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Carbon and hydrogen
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Carbon and hydrogen are the two elements which are present in both CNG and petroleum
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Carbon and Hydrogen
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Yes the two elements carbon and hydrogen
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Carbon and Hydrogen
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What is the formula of salt
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Carbon and hydrogen
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Carbon and hydrogen are the two element present in both CNG and HYDROGEN..
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C and H2
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Hiiiiiiiii
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Ooooooppppooo?ssssssss
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Methan
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Hello
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Very simple carbon and hydrogen
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carbon?and?hydrogen?are the two elements present in both cng and petroleum.
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Helium
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Wood
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Methane and Nitrogen
These elements are present in both CNG and Petroleum
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