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The empirical formula of a compound is \(\mathrm{CH}_{2} \mathrm{O}\). Its molecular weight is 180 . The molecular formula of the compound is
(a) \(\mathrm{C}_{4} \mathrm{HO}_{4}\)
(b) \(\mathrm{C}_{5} \mathrm{H}_{10} \mathrm{O}_{5}\)
(c) \(\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}_{3}\)
(d) \(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\)

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Correct option (d) \(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\)
Explanation:
Empirical formula of compound is \(\mathrm{CH}_{2} \mathrm{O}\)
Empirical formula mass \(=12+2+16=30\)
Molecular weight of compound \(=180\)
As, \(n=\frac{\text { molecular mass }}{\text { empirical mass }}=\frac{180}{30}=6\)
Therefore, molecular formula of compound is \(\left(\mathrm{CH}_{2} \mathrm{O}\right)_{6}=\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\)
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