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8th Class Science Coal and Petroleum Question Bank Coal and Petroleum Formative Objective Problems

  • question_answer
                    Assertion (A): The slow process of conversion of dead vegetation into coal is called catenation. Reason (R):   When heated in air, coal burns and produces mainly carbon dioxide gas.

    A)  A is correct and R is the correct explanation of A.

    B)  A is correct and R is not the correct explanation of

    C)  A is correct and R is wrong.

    D)  A is wrong and R is correct.

    Correct Answer: D

    Solution :

      The slow process of conversion of dead vegetation into coal is called Carbonisation. \[C+{{O}_{2}}\to C{{O}_{2}}\] So, A is wrong and R is correct. Therefore, the right answer is (d)


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