Question

There are four parameters given below that are involved information of coal, point out the incorrect parameter a) high temperature b) high pressure c) 20 yrs time d) formed from biomass

Answer 1

Answer:

C is incorrect

Explanation:

As we know that coal is being formed naturally & takes millions of years to form by decomposition of millions of trees , humus , decays etc.

B is also incorrect as it varies place to place.

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Answer 2

As from the given parameters, the incorrect information about the coal given is 20 years time.

Option - C

Explanation:

• Coal is the combination of majorly carbon elements and some sulphur, nitrogen and the oxygen.

• Coal is a black sedimentary rock, which is combustible formed as a coal seams.
• The devolatilization of coal is occurred at very high temperature of about 1200K.
• The coal is formed under a depth of minimum 200ft and majorly will found above 200ft. So, it is formed in high heat and high pressure.
• The coal is formed by the decaying of dead matters of plant and animals into a peat and then it will becomes coal by the high heat and pressure for about 300 millions of years.

So, the incorrect parameter about the coal is option C) 20 yrs time.

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There are four parameters given below that are involved information of coal, point out the incorrect parameter a) high temperature b) high pressure c) 20 yrs time d) formed from biomass

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