GK
ELEMENTS COMPOUNDS SUBSTANCES METALS AND NON METALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Iron
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Gold
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Carbon
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Copper
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Detailed explanation-1: -Carbon and hydrogen are present in fuels in the form of hydrocarbons.
Detailed explanation-2: -Carbon is generally used as a fuel as carbon has a high calorific value, and it heats up fast. Most common fuels are either entirely composed of carbon or are carbon based fuels. E.g. coal, coke, CNG.
Detailed explanation-3: -Fossil fuels are made from decomposing plants and animals. These fuels are found in the Earth’s crust and contain carbon and hydrogen, which can be burned for energy. Coal, oil, and natural gas are examples of fossil fuels.
Detailed explanation-4: -Carbon in Fuels Hydrocarbons are molecules which contain carbon and hydrogen. They make up the fuels the world uses to get most of its primary energy-around 95%-and when we use them to get this energy, one of the products that is made is CO2.
Detailed explanation-5: -Carbon compounds are used as fuel because they burn with a clean flame and no smoke is produced. Carbon compounds have higher calorific values, maximum ignition temperature and their combustion can be restrained. Hence, carbon and its compounds are a great source of fuel.