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KVPY Sample Paper KVPY Stream-SX Model Paper-7

  • question_answer
    Assuming that \[{{O}_{2}}\] molecule is spherical in shape with radius \[2\overset{o}{\mathop{A}}\,\], the percentage of the volume of \[{{O}_{2}}\] molecules to the total volume of gas at S.T.P. is:

    A) 0.09 %             

    B)  0.9 %            

    C) 0.009 %          

    D) 0.045 %

    Correct Answer: A

    Solution :

    Required \[%=\frac{4}{3}\times \frac{\pi \times {{(2\times {{10}^{-8}})}^{3}}\times 6\times {{10}^{23}}}{22400}\times 100\]


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