| Study the given flowchart carefully. |
|
| Which of the following statements is correct? |
A) X can be condensed back to coal.
B) Y and Z are useless products.
C) Z starts burning when exposed to air.
D) None of these
Correct Answer: D
Solution :
X is coal gas which cannot be condensed back to coal. Y and Z are coal tar and coke respectively which are quite useful products.
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