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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.

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Answers by country

Malaysia

9%

80%

9%

0%

41

Austria

5%

78%

15%

0%

52

Australia

9%

77%

8%

1%

108

Poland

5%

76%

15%

1%

14881

the United Kingdom

11%

73%

10%

2%

319

Germany

11%

71%

13%

3%

285

Unknown

10%

65%

18%

2%

38

Kazakhstan

9%

63%

21%

6%

33

Italy

15%

61%

12%

10%

77

the United States

16%

60%

17%

2%

897

India

10%

60%

25%

1%

878

Nigeria

15%

60%

19%

3%

66

Ukraine

9%

59%

25%

2%

271

the Philippines

18%

59%

17%

1%

88

Russia

13%

58%

25%

0%

173

Pakistan

18%

56%

20%

2%

105

Canada

14%

55%

28%

1%

69

the United Arab Emirates

16%

53%

16%

3%

30

Switzerland

18%

47%

22%

8%

48

Belarus

19%

42%

38%

0%

42

What is the effect of nicotinic acid on human organism?

It is harmful, causes cancer

It is highly toxic, kills in 10 seconds

It is essential for functioning

What is the strongest known acid?

fluoroantimonic acid

Which acid causes the sourness of green apples?

Since 1998, Harvard University wraps marble statues on its campus with waterproof covers every winter. Why?

to protect from frost

to protect from birds

to protect from acid rains

to protect from graffiti makers