Ferric chloride is applied to stop bleeding cut because

Options

A. `Fe^(3+)` ion coagulates blood which is a negatively charged sol.
B. `Fe^(3+)` ion coagulates blood which is a positively charged sol.
C. `Cl^(-)` ion coagulates blood which is positively charged sol.
D. `Cl^(-)` ion coagulates blood which is a negatively charged sol.

Answer

A

Explanation

`Fe^(3+)` ions coagulate the solble proteins (present in blood plasma) which are negetively charged. (Remember that when a blood vessel breaks, bleeding stops by itself afte rsometime. It is due to colustering together of platelest (blood particles) to from a plug).