CET Karnataka Medical CET - Karnataka Medical Solved Paper-2003

  • question_answer
    What is the volume of 20 volume \[{{H}_{2}}{{O}_{2}}\] required to get 5000 cm of oxygen at S.T.P?

    A)  \[250c{{m}^{3}}\]

    B)  \[50c{{m}^{3}}\]

    C)  \[100c{{m}^{3}}\]

    D)  \[125c{{m}^{3}}\]

    Correct Answer: A

    Solution :

    20 volume \[{{H}_{2}}{{O}_{2}}\] means that 1 ml of this \[{{H}_{2}}{{O}_{2}}\]  gives  20 ml  oxygen  on decomposition at S.T.P. Hence \[5000cm\,{{O}_{2}}\]will be obtained by \[=\frac{5000}{20}\] \[=250c{{m}^{3}}\]


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