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Question
Write the molecular formulae of the third and fifth members of homologous series represented by general formula CnH2n-2.
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Solution
As the general formula of the homologous series is CnH2n-2 so they represent Alkynes.
Third member: C4H6
Fifth member: C6H10
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\[\begin{array}{cc}
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\ce{-||-}\\
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