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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Self Evaluation Test - Some Basic Concepts of Chemistry

  • question_answer
    The amount of zinc required to produce 224 mL of \[{{H}_{2}}\] at STP on treatment with dil. \[{{H}_{2}}S{{O}_{4}}\] will be

    A) 6.5 g        

    B) 0.65 g

    C) 65 g                             

    D) 0.065g

    Correct Answer: B

    Solution :

    [b] \[Zn+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}ZnS{{O}_{4}}+{{H}_{2}}\] 65 g Zn gives 1 mole of \[{{H}_{2}}=22400\text{ }mL\] of \[{{H}_{2}}=224\text{ }mL\] of \[{{H}_{2}}\]will be obtained from 0.65 g Zn.


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