Carbon percentage is maximum in

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(C) The percentage of $C$ is calculated as: $\frac{	ext{Mass of } C}{	ext{Molar mass of substance}} 	imes 100$.$1$. Pyrene $(CCl_4)$: $\frac{12}{15

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Ethylene glycol

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(C) The percentage of $C$ is calculated as: $\frac{	ext{Mass of } C}{	ext{Molar mass of substance}} 	imes 100$.$1$. Pyrene $(CCl_4)$: $\frac{12}{154} 	imes 100 \approx 7.79\ \%$.$2$. Gammexane $(C_6H_6Cl_6)$: $\frac{72}{291} 	imes 100 \approx 24.74\ \%$.$3$. Ethylene glycol $(C_2H_6O_2)$: $\frac{24}{62} 	imes 100 \approx 38.71\ \%$.$4$. $PVC$ $([C_2H_3Cl]_n)$: $\frac{24}{62.5} 	imes 100 \approx 38.40\ \%$.Comparing the values,the carbon percentage is maximum in Ethylene glycol.

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