Which of the following is NOT a majar pollutant from car exhaust?
A NO2
B soot
C lead compound
D SO2
2007-01-01 18:01:31 · 2 個解答 · 發問者 2003 2 in 科學 ➔ 化學
explain why not C?
isn't nowsaday in Hong Kong,we use unleaded petrol?
2007-01-01 18:31:08 · update #1
but lead compound can also be removed effectively ,can't?
2007-01-06 07:57:40 · update #2
Four of them can be the pollutants from car exhaust. NO2 is the generated after combustion of some nitro-compound which is put in petrol as anti-knocking agent. Soot is generated if the engine is not in perfect condition. Lead compound may generated if the pertoleum is not unleaded. SO2 is generated is the petroleum is not desulfurized. To my opinion, SO2 should not be the major pollutant since the petroleum has been de-sulfurized effectively.
2007-01-02 18:14:54 · answer #1 · answered by Po Hung 6 · 0⤊ 0⤋
D burn petrol 是不會有so2的
2007-01-01 18:06:57 · answer #2 · answered by ? 1 · 0⤊ 0⤋