10th Class Science Solved Paper - Science-2017 Outside Delhi Set-III

  • question_answer
    Write the molecular formula of the 2nd and 3rd member of the homologous series where the first member is ethyne.

    Answer:

    (i)\[C{{H}_{3}}C\equiv CH\mathrm{ (propyne)}\], \[n=3\]
    (ii) \[C{{H}_{3}}C{{H}_{2}}C\equiv CH\mathrm{ (}Butyne\mathrm{)}\],\[n=4\]


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