Question

Insulin contains $3.4\%$ sulphur. The minimum molecular weight of insulin is

• A. 351
• B. 471
• C. 561
• D. 941

Answer 1

Answer: (D)

Minimum mass of sulphur $=$ wt. of its one atom $=32$
$3.4g$ of sulphur present in $100g.$
$\therefore 32g$ of sulphur present in $=\frac{100\times 32}{3.4}=941.17$