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Why are carbon and its compounds used as fuels? - Science and Technology

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प्रश्न

Why are carbon and its compounds used as fuels?

लघु उत्तरीय
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उत्तर

The following explanations explain why fuels made of carbon and its compounds are used:

  1. Because of their high hydrogen and carbon content, they provide combustion with a significant amount of heat.
  2. Fuel-grade carbon compounds are straightforward to work with and have high calorific values and ideal ignition temperatures.
  3. There is control over their combustion. Carbon and its components are therefore employed as fuels.
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अध्याय 13: Carbon: An important element - Exercise [पृष्ठ १४९]

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बालभारती Science and Technology [English] 9 Standard Maharashtra State Board
अध्याय 13 Carbon: An important element
Exercise | Q 2. a. | पृष्ठ १४९

संबंधित प्रश्न

Write the molecular formula of the 2nd and 3rd member of the homologous series whose first member is ethene. 


What is the general name of all the compounds made up of carbon and hydrogen?


Fill in the blank

...............is used in making black shoe polish.


Choose the correct alternative

The process by which decayed plants slowly convert into coal is called.


Explain the term ‘green house effect’. How can it be both beneficial and harmful for life on earth ?


Match the colunm 

       column  A         column B
1. A product of incomplete burning  a. Hopcolite     
2. Nature of carben monoxide  b. Combustible gas 
3. A compound formed by the combination of haemoglobin and carbon monoxide  c. carboxy-haemoglobin
4. A mixture of metallic oxides  d. Carbon monoxide 
5. Carbon monoxide  e. Highly poisonous 

FILL IN THE BLANK

Organic compounds have ........ boiling and melting points.


How is gas carbon produced?


List any two abiotic components of an ecosystem.  
 

 


State two characteristic features of carbon which when put together give rise to a large number of carbon compounds.


In which compound forms does carbon occur?


Differentiate between the two branches of chemistry – organic chemistry & inorganic chemistry with suitable examples.


How would you prove experimentally that carbon dioxide does not support combustion.


Starting from carbon dioxide how would you obtain a highly poisonous gas.
[Give balanced equations for the same]


State how you would convert carbon dioxide to a metallic carbonate using a basic oxide e.g. sodium oxide. [Give a balanced equation]


Name the following:

The gaseous product obtained when carbon monoxide is passed over heated iron [III] oxide.


Give a reason for the following:

Carbon monoxide and not carbon dioxide, is a highly poisonous gas.


Compounds with same molecular formula and different structural formula are known as ______.


Carbon monoxide enters the human body through ______.


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