JEE Main & Advanced Chemistry Hydrogen & Its Compounds Question Bank Hydrogen

  • question_answer When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution the ratio of volumes of hydrogen evolved is [CPMT 1991]

    A) 1 : 1

    B) 1 : 2

    C) 2 : 1

    D) 9 : 4

    Correct Answer: A

    Solution :

    \[Zn+{{H}_{2}}S{{O}_{4}}\to ZnS{{O}_{4}}+{{H}_{2}}\] \[Zn+2NaOH\to N{{a}_{2}}Zn{{O}_{2}}+{{H}_{2}}\] \ Ratio of volumes of \[{{H}_{2}}\] evolved is 1:1.


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