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
6%
87%
6%
0%
16
flagMalaysia
12%
81%
6%
0%
32
flagKazakhstan
6%
80%
13%
0%
15
flagPoland
5%
76%
15%
1%
12139
flagthe United Kingdom
9%
75%
10%
2%
211
flagGermany
5%
75%
13%
5%
60
flagAustralia
11%
70%
11%
3%
61
flagSingapore
11%
69%
19%
0%
26
flagUnknown
10%
65%
18%
2%
38
flagthe United States
16%
60%
17%
3%
756
flagIndia
10%
60%
26%
2%
588
flagRussia
15%
60%
22%
0%
70
flagCanada
9%
60%
30%
0%
53
flagNigeria
20%
60%
16%
3%
30
flagthe United Arab Emirates
13%
60%
17%
4%
23
flagthe Philippines
21%
57%
13%
1%
61
flagPakistan
21%
55%
15%
4%
70
flagUkraine
12%
53%
28%
3%
107
flagSwitzerland
20%
45%
25%
5%
20
flagBelarus
26%
39%
34%
0%
23