In the 'pollution test' of motorcars at the service station, which of – McqOptions

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1.	In the 'pollution test' of motorcars at the service station, which of the following is identified and its quantity is measured?
A.	lead and carbon particles
B.	oxides of nitrogen and sulfur
C.	carbon monoxide
D.	carbon di oxide
Answer» B. oxides of nitrogen and sulfur

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