Which acid mostly contributes to acid rains?

hydrochloric acid
sulfuric acid
nitric acid
citric acid
The most important gas which leads to acidification is sulfur dioxide, coming from fossil fuel combustion and industry (and, in lesser amounts, from volcanoes and wildfires). In recent years, emissions of nitrogen oxides which are oxidized to form nitric acid are of increasing importance due to stricter controls on emissions of sulfur containing compounds.
Cleo
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Very interesting!
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Answers by country

hydrochloric acid
sulfuric acid
nitric acid
citric acid
answers
flagIndonesia
7%
84%
7%
0%
13
flagMalaysia
9%
83%
6%
0%
31
flagthe United Kingdom
9%
76%
9%
2%
184
flagGermany
0%
76%
16%
8%
25
flagPoland
5%
75%
15%
1%
10950
flagSingapore
10%
73%
15%
0%
19
flagAustralia
12%
69%
10%
3%
56
flagUnknown
10%
65%
18%
2%
38
flagCanada
8%
63%
27%
0%
47
flagIndia
9%
62%
24%
1%
489
flagRussia
17%
62%
20%
0%
40
flagthe United States
17%
60%
16%
2%
646
flagNigeria
17%
60%
17%
4%
23
flagthe Philippines
20%
58%
13%
1%
58
flagthe United Arab Emirates
14%
57%
19%
4%
21
flagPakistan
23%
54%
13%
5%
59
flagSpain
30%
50%
10%
0%
10
flagUkraine
10%
46%
32%
6%
64
flagBelarus
26%
33%
40%
0%
15