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Q.

Which of the following statement is not correct regarding the formation of coal?

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a

Under suitable conditions, dead vegetation got converted to coal.

b

The formation of coal occurred 50 million to 25 million years ago,

c

Floods led to the burial of forests under the soil.

d

Deposition of soil led to a rise in temperature. 

answer is D.

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Detailed Solution

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Due to the flood, the forests got buried under the soil. As more soil is deposited, the temperature rises. So, under high temperatures and high pressure, dead vegetation got converted to coal. The formation of coal occurred 360 million to 290 million years ago during the Carboniferous (“coal-bearing”) Period. 

Hence, the statement ''The formation of coal occurred 50 million to 25 million years ago''  is incorrect.

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