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NEET Sample Paper NEET Sample Test Paper-71

  • question_answer
    The circulation of blood in human body supplies \[{{O}_{2}}\] and releases \[C{{O}_{2}}\]. The concentration of \[{{O}_{2}}\] and \[C{{O}_{2}}\] is variable but on an average, 100 ml blood contains 0.02 g of \[{{O}_{2}}\] and 0.08 g of \[C{{O}_{2}}\]. The volume of \[{{O}_{2}}\] and \[C{{O}_{2}}\] at 1 atm and at body temperature\[37{}^\circ C\], assuming 10 L blood in human body, is

    A) 2 L, 4 L            

    B) 1.5 L, 4.5 L

    C) 1.59 L, 4.62 L   

    D) 3.82 L, 4.62 L

    Correct Answer: C

    Solution :

    \[\because \] 100 ml blood has 0.02 g \[{{O}_{2}}\], and 0.08 g \[C{{O}_{2}}\] \[\therefore \] 10,000 ml blood has 2 g \[{{O}_{2}}\] and 8 g \[C{{O}_{2}}\] Using \[\operatorname{PV}=nRT\] For \[{{\operatorname{O}}_{2}},1\,\,\times \,\,{{V}_{{{O}_{2}}}}=\frac{2}{32}\,\,\times \,\,0.0821\,\,\times \,\,310\] \[\Rightarrow \,\,\,\,{{V}_{{{O}_{2}}}}\,\,=\,\,1.59 litre\] For \[{{\operatorname{CO}}_{2}}, 1 \times \,\,{{V}_{C{{O}_{2}}}}\,\,=\, \frac{8}{44} \times  0.0821 \times  310\] \[\Rightarrow \,\,\,\,\,\,\,{{V}_{C{{O}_{2}}}}=4.62\,\,litre\]


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