Q.

Assertion:


Burning of coal is a physical change


Reason:


When coal is burnt, the chief component, carbon is changed to carbon dioxide. This process cannot be reversed.


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a

Both assertion and reason are correct and the reason is the correct explanation for the assertion.   

b

Both assertion and reason are correct but the reason is not the correct explanation for the assertion.   

c

Assertion is correct but the reason is incorrect   

d

Assertion is incorrect and the reason is correct. 

answer is D.

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Detailed Solution

Coal combustion is a chemical reaction. When coal is burned, the main component, carbon, is converted to CO2. This is an irreversible procedure.
  
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