JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkane

  • question_answer
    The most important method of preparation of hydrocarbons of lower carbon number is [CBSE PMT 1989]

    A) Pyrolysis of higher carbon number hydrocarbons

    B) Electrolysis of salts of fatty acids

    C) Sabatier and Senderen's reaction

    D) Direct synthesis

    Correct Answer: A

    Solution :

    \[\underset{\text{Hexane}}{\mathop{{{C}_{6}}{{H}_{14}}}}\,\underset{\Delta }{\mathop{\xrightarrow{Pyrolysis}}}\,\underset{\text{Ethene}}{\mathop{{{C}_{2}}{{H}_{4}}}}\,+\underset{\text{Butane}}{\mathop{{{C}_{4}}{{H}_{10}}}}\,\]


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