A) Acetylene
B) Benzene
C) Carbon tetrachloride
D) Methane
Correct Answer: D
Solution :
\[C{{H}_{4}}+{{O}_{2}}\underset{\begin{smallmatrix} \text{Limited} \\ \text{supply } \\ \text{of air} \end{smallmatrix}}{\mathop{\xrightarrow{\Delta }}}\,C+2{{H}_{2}}O\] It contains 98-99% carbon. It is used in making black ink, paints and shoe polishes.
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