10th Class Science Solved Paper - Science-2015 Outside Delhi Set-II

  • question_answer
    What is meant by homologous series of carbon compounds? Classify the following carbon compounds into two homologous series and name them.
    \[{{\mathbf{C}}_{\mathbf{3}}}{{\mathbf{H}}_{\mathbf{4}}}\mathbf{, }{{\mathbf{C}}_{\mathbf{3}}}{{\mathbf{H}}_{\mathbf{6}}}\mathbf{, }{{\mathbf{C}}_{\mathbf{4}}}{{\mathbf{H}}_{\mathbf{6}}}\mathbf{, }{{\mathbf{C}}_{\mathbf{4}}}{{\mathbf{H}}_{\mathbf{8}}}\mathbf{, }{{\mathbf{C}}_{\mathbf{5}}}{{\mathbf{H}}_{\mathbf{8}}}\mathbf{, }{{\mathbf{C}}_{\mathbf{5}}}{{\mathbf{H}}_{\mathbf{10}}}\].

    Answer:

    A series of carbon compounds in which the same functional group substitutes for hydrogen in a carbon chain is called homologous series.
                Alkynes - \[{{C}_{3}}{{H}_{4}},{{C}_{4}}{{H}_{6}},{{C}_{5}}{{H}_{8}}\]
                Alkene - \[{{C}_{3}}{{H}_{6}},\,{{C}_{4}}{{H}_{8}},{{C}_{5}}{{H}_{10}}\]


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