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Question

Incomplete burning of a carbon-based fuel produces ___ gas which can build up in our bloodstream and cause death.


A
carbon monoxide
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B

carbon dioxide

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C

hydrogen

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D

carbide

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Solution

The correct option is A carbon monoxide

Incomplete burning of a fuel happens due to insufficient supply of oxygen gas for combustion. This leads to the formation of carbon monoxide which is an odourless, colourless and toxic gas.
Carbon monoxide gas, when inhaled, combines with blood and reduces the oxygen-carrying capacity of Haemoglobin, thereby damaging the nervous system and even causing death. On the other hand, when a carbon-based fuel burns with a sufficient supply of oxygen, it produces carbon dioxide, which is a non-poisonous gas usually.


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