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# Insulin contains 3.4% sulphur.The minimum mol weight of insulin is :

$\begin{array}{1 1}(a)\;941.176&(b)\;944\\(c)\;945.27&(d)\;None\;of\;these\end{array}$

Can you answer this question?

3.4g S=100g insulin
$\therefore$ 32g S=$\large\frac{100\times 32}{3.4}$
$\Rightarrow 941.176$
Insulin must contain at least one atom of S in its one molecule.
Hence (a) is the correct answer.
answered Jan 9, 2014