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

  • question_answer
    How many years it would take to spend Avogadro's number of rupees at the rate of 1 million rupees in one second?

    A) \[19.098\times {{10}^{19}}\] years       

    B) \[19.098\] years

    C) \[19.098\times {{10}^{9}}\] years  

    D)             None of these

    Correct Answer: C

    Solution :

    [c] \[\because \] \[{{10}^{6}}\] rupees are spent in 1 sec.
    \[\therefore \] \[6.023\times {{10}^{23}}\] rupees are spent in
    \[\frac{1\times 6.023\times {{10}^{23}}}{{{10}^{6}}}\]
    \[\sec =\frac{1\times 6.023\times {{10}^{23}}}{{{10}^{6}}\times 60\times 60\times 24\times 365}\]years
    \[=19.098\times {{10}^{9}}\]years


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