10th Class Science Solved Paper - Science-2016 Outside Delhi Set-I

  • question_answer A carbon compound 'P' on heating with excess cone. \[{{\mathbf{H}}_{\mathbf{2}}}\mathbf{S}{{\mathbf{O}}_{\mathbf{4}}}\] forms another carbon compound 'Q' which on addition of hydrogen in the presence of nickel catalyst forms a saturated carbon compound 'R'. One molecule of 'R' on combustion forms two molecules of carbon dioxide and three molecules of water. Identify P, Q and R and write chemical equations for the reactions involved.

    Answer:

    P = Ethyl alcohol
    Q = Ethene
    R = Ethane


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