Question

Carbon percentage is maximum in

• A. Pyrene
• B. Gammexane
• C. Ethylene glycol
• D. PVC

Answer 1

The correct option is C Ethylene glycol

% $ofC=\frac{MassofC}{Massofsubstance}\times 100$

$Pyrene\Rightarrow CC{l}_4=\frac{12}{154}\times 100=7.79$ %

$Gammexane\Rightarrow C_6{H}_{6}C{l}_6=\frac{72}{291}\times 100=24.74$ %

$Ethyleneglycol\Rightarrow C{H}_{2}OH-C{H}_{2}OH=\frac{24}{62}\times 100=38.70$ %
$PVC\Rightarrow (-C{H}_2-\underset{\underset{\text{Cl}}{|}}{C}H-{)}_n=\frac{2n\times 12}{n\times 62.5}\times 100=38.4\%$
Option C is correct