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What is steel made of?

iron and coal

iron and titanium

iron and quartz

iron and magnesium

Carbon steel, composed simply of iron and carbon, accounts for 90% of steel production. Low alloy steel is alloyed with other elements, usually molybdenum, manganese, chromium, or nickel, in amounts of up to 10% by weight to improve the hardenability of thick sections.

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77%

12%

3%

4%

89

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8%

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14399

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76%

11%

7%

3%

26

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68%

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4%

9%

487

Germany

66%

9%

10%

11%

697

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61%

15%

10%

9%

95

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59%

17%

3%

19%

96

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59%

14%

7%

16%

54

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57%

21%

7%

11%

460

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51%

23%

5%

18%

259

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50%

24%

4%

15%

83

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50%

23%

13%

10%

30

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50%

32%

3%

14%

28

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42%

22%

7%

25%

483

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42%

23%

19%

11%

26

India

39%

15%

14%

29%

801

Nigeria

34%

19%

15%

27%

126

Canada

31%

24%

8%

33%

45

Pakistan

30%

28%

19%

20%

78

the Philippines

26%

25%

9%

37%

64

Brass is an alloy made of ...

nickel and copper

zinc and copper

bronze and copper

brass is a chemical element

When and where was the idea of gold, silver and bronze medals for sport event competitors introduced?

10th century BC, Ancient Greece

3rd century AD, Ancient Rome

1904 Summer Olympics, St. Louis

1936 Summer Olympics, Berlin

What material are church bells made of?

What is the name of this fruit?