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  5. Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ

NEET Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ NEET PYQ-Some Basic Concepts Chemistry

  • question_answer
    Percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (at. wt. = 78.4), then minimum molecular weight of peroxidase anhydrous enzyme is:                                                                                         [AIPMT 2001]

    A)  \[1.568\times {{10}^{4}}\]                  

    B)  \[1.568\times {{10}^{3}}\]

    C)  15.68

    D)                   \[2.168\times {{10}^{4}}\]

    Correct Answer: A

    Solution :

    Suppose the mol. wt. of enzyme = x
                0.5% by weight means in 100 g of enzyme wt. of Se = 0.5g
                \[\therefore \] In x g of enzyme wt. of Se \[=\frac{0.5}{100}\times x\]
                Hence,  \[78.4=\frac{0.5\,\times x}{100}\]
                \[\therefore \]      x = 15680 = 1.568 × 104


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