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The most difficult coal riddles

A list of coal related questions that are most often answered incorrectly
Nature quiz
How many people were killed in the Great Smog of London in 1952?
86
560
1,176
12,000
The Great Smog of London was a severe air-pollution event that affected the British capital in early December 1952. The contemporary estimates put the number of fatalities at 6,000, however, the more recent research suggests that it was twice as many, at about 12,000.
ShadowMaster
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wikipedia → Great Smog of London
4
Very interesting!
the United Kingdom riddles
Where do you have the best chance to find a natural diamond?
near the volcano
in the coal mine
in the silver mine
at the beach
It is sometimes mistakenly believed that diamonds are made from coals. High pressure and heat is required for the formation of diamonds from carbons, but these carbons are not the ones that form coal. Diamonds are formed deep under the surface and are brought up during outbreaks of volcanoes.
 Monica Stiller
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3
Very interesting!
diamonds riddles
Which type of a coal is the youngest?
lignite (brown coal)
graphite
bituminous coal
anthracite
Coal forms when the dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, then bituminous coal, and lastly anthracite.
 Kasia
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0
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Very interesting!
natural resources riddles
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