Q. Insulin contains 3.4% sulphur. What will be the minimum molecular weight of insulin?
A) 94.117
B) 1884
C) 941.176
D) 976
Explanation
(c)
For minimum molecular mass, there must be one S atom per insulin molecule.
If 3.4 g S is present, the molecular mass = 100
$\therefore$ If 32 g S is present, the molecular mass = $\frac{100 \times 32}{3.4}$
$= 941.176$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.