Some Basic Concepts Of Chemistry Question 220

Question: The percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (atomic weight=78.4). Then minimum molecular weight of peroxidase anhydrous enzyme is [CBSE PMT 2001]

Options:

A) $ 1.568\times 10^{4} $

B) $ 1.568\times 10^{3} $

C) $ 15.68 $

D) $ 3.136\times 10^{4} $

Show Answer

Answer:

Correct Answer: A

Solution:

0.5gm Se $ \to $ 100gm peroxidase anhydrous enzyme 78.4gm Se $ \to \frac{100\times 78.4}{0.5}=1.568\times 10^{4} $

Minimum m.w. $ \to $ molecule at least contain one selenium.



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