Question

A substance contains 3.4%$S$. if it contain two atom of sulphur per molecule then minimum molecular weight of substance will be:

• A. 188.2
• B. 94.1
• C. 1882
• D. 282.3

Answer 1

Answer: (A)

188.2

According to question-
$3.4gS=100g$ insulin

$\therefore 32gS=\frac{100\times 32}{3.4}$

$\Rightarrow 941.176$
For two atoms of $S$
$\Rightarrow 941.176\times 2=1882.4$
Here correct unit is $\frac{18882.4}{10}=188.2$

Insulin must contain at least Two atom of S in its one molecule.

Hence $\left(A\right)$ is the correct answer.