In the pollution control board, which components are tested for vehicles?
A
Methane
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B
Carbon monoxide
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C
Hydrocarbons
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D
Chlorofluorocarbons
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Solution
The correct options are B Carbon monoxide C Hydrocarbons In the case of vehicles, the emission of carbon monoxide and hydrocarbons are checked in the pollution control board. Their readings should be lower than the recommended permissible limits .