Which of the following is not an allotropic variety of coal?

diamond
graphite
fullerene
anthracite
An al­lotropy is a phe­nom­e­non of ap­pear­ing, in the same state of ag­gre­ga­tion, of all sorts va­ri­eties of the same chemical element, dif­fer­ing in physical prop­er­ties and chem­i­cal. Coal is ap­pear­ing mainly in the form of diamond, graphite, fullerene and graphene. An­thracite is simply a variety of the hard bi­tu­mi­nous coal.

Answers distribution

diamond
graphite
fullerene
anthracite
answers
flagthe United Arab Emirates
10%
20%
10%
60%
10
flagPakistan
20%
0%
20%
60%
10
flagIndia
8%
6%
33%
51%
133
flagUnknown
7%
2%
40%
50%
42
flagPoland
10%
11%
35%
42%
3067
flagAustralia
5%
17%
35%
41%
17
flagthe Philippines
10%
5%
45%
40%
20
flagSingapore
10%
20%
30%
40%
10
flagthe United States
9%
14%
35%
39%
215
flagNorway
23%
7%
30%
38%
13
flagGermany
15%
21%
25%
37%
51
flagthe United Kingdom
13%
14%
33%
36%
136
flagRepublic of Ireland
0%
30%
40%
30%
10
flagCanada
15%
15%
42%
26%
19
flagFrance
16%
16%
58%
8%
12

Gender

men39%
women36%
diamond
10%
11%
graphite
8%
14%
fullerene
40%
37%
anthracite
39%
37%

Language versions

question
answers
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Which of the following is not an allotropic variety of coal?
598
43%

Details

Author: Paweł Kołodziejczyk
Illustration: Jeffrey Beall
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