A hydrocarbon contain \( 80 \% \mathrm{C} \). The vapour density \( \mathrm{P} \) of compound is...

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A hydrocarbon contain \( 80 \% \mathrm{C} \). The vapour density
\( \mathrm{P} \)
of compound is 30 . Molecular formula of compound
W
is :-
(A) \( \mathrm{CH}_{3} \)
(B) \( \mathrm{C}_{2} \mathrm{H}_{6} \)
(C) \( \mathrm{C}_{4} \mathrm{H}_{12} \)
(D) All of these
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