Question

Which one of the following green house gases is a contributor due to incomplete combustion of coal and petroleum?
i) Oxides of nitrogen
ii) Methane
iii) Carbon monoxide
iv) Carbon dioxide

Answer 1

iii)Carbon monoxide (CO)

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Answer 2

Carbon monoxide is a contributor due to ‘incomplete combustion’ of coal and petroleum.

Option: (iii)

Explanation:

• Incomplete burning takes place when ‘there is not enough’ supply of oxygen. This takes place in isolated place where carbon, ‘carbon monoxide’ and water vapour is formed.  

• On complete combustion only ‘carbon dioxide and water vapour’ is formed. Incomplete combustion results in soot.  

• The door is rich in carbon monoxide which is a very toxic compound since it reacts with oxygen to form carboxyhemoglobin. Also it traps the ‘heat of the sun’. Hence a green-house gases.

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