Bleeding is stopped by the application of ferric chloride. This is because

Options

A. the blood starts flowing in opposite direction
B. the blood reacts and forms a solid, which seals the blood vessel
C. the blood is coagulated and thus the blood vessel is sealed
D. the ferric chloride seals the blood vessel

Answer

C

Explanation

Blood is a colloidal solution containing a -ve charge colloidal particle (Albuminoid), bleeding can be stopped by use alum or `FeCl_(3)` solution. The addition of `Al^(3+)` or `Fe^(3+)` causes coagulation of blood, so bleeding stops.