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NEET Chemistry Hydrogen & Its Compounds / हाइड्रोजन और इसके यौगिक Question Bank Self Evaluation Test - Hydrogen

  • question_answer
    2 g of aluminium is treated separately with excess of dilute \[{{H}_{2}}S{{O}_{4}}\] and excess of \[NaOH.\] The ratio of the volumes of hydrogen evolved is

    A) 2:3                               

    B) 1:1  

    C) 2:1                               

    D) 1:2

    Correct Answer: B

    Solution :

    [b] \[2Al+3{{H}_{2}}S{{O}_{4}}\to A{{l}_{2}}{{(S{{O}_{4}})}_{3}}+3{{H}_{2}}\] \[2Al+2NaOH+2{{H}_{2}}O\to 2NaAl{{O}_{2}}+3{{H}_{2}}\] The ratio of volumes of hydrogen evolved is 1:1.


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