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Question

Emissions from motor vehicles contain ___ .


A

Hydrocarbons

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B

CO

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C

Lead

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D

All of these

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Solution

The correct options are
A

Hydrocarbons


B

CO


C

Lead


The composition of vehicular emission or exhaust is mainly nitrogen, water vapour and carbon dioxide. The undesirable noxious or toxic substances in exhausts include carbon monoxide from incomplete combustion, hydrocarbons from unburnt fuel, nitrogen oxides and particulate matter, including trace elements such as lead.


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