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What was graphite believed to be a form of?

lead
mercury
iron
chalk
When large deposit of graphite was found in the 16th century in England, it was thought to be a form of lead. In many languages, the word for pencil literally means lead pen. (German Bleistift, Polish ołówek, Arabic قلم رصاص)
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Answers by country

lead
mercury
iron
chalk
answers
flagCanada
82%
5%
4%
7%
134
flagAustralia
80%
4%
3%
7%
161
flagthe United States
79%
6%
5%
6%
1771
flagIndia
77%
6%
5%
8%
1292
flagMalaysia
77%
7%
3%
11%
63
flagSingapore
77%
8%
2%
11%
45
flagUnknown
76%
8%
6%
8%
46
flagRepublic of Ireland
76%
12%
5%
5%
39
flagGreece
74%
9%
9%
6%
31
flagthe Netherlands
73%
4%
4%
17%
41
flagNepal
73%
10%
0%
16%
30
flagthe United Kingdom
71%
6%
6%
12%
580
flagthe Philippines
71%
8%
5%
11%
159
flagGermany
70%
8%
12%
7%
162
flagthe United Arab Emirates
70%
8%
2%
16%
37
flagPakistan
63%
8%
6%
16%
145
flagNigeria
62%
16%
6%
11%
181
flagGhana
58%
6%
9%
18%
43
flagPoland
57%
8%
13%
19%
24080
flagUkraine
40%
15%
15%
26%
45

What makes depleted uranium a good material for making ammunition?

radioactivity
high density
explosiveness
extreme hardness

Which chemical element has been named after the Sun?

Gold
Helium
Oxygen
Phosphorus

Which of the following countries doesn't have its "own" element?

Poland
Germany
Italy
France

In the Middle Ages large areas of the Netherlands were flooded by the sea. What was the reason?

peat extraction
tectonic movements
rise of the ocean level
building dams over rivers