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
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