Which of the following solutions is used in the styptic action which prevents bleeding of blood?
Which of the following solutions is used in the styptic action which prevents bleeding of blood?
$\mathrm{CoCl}_2$ solution
$\mathrm{FeCl}_3$ solution
Gold sol
AgBr emulsion
Solution
Blood is a colloidal solution of an albuminoid substance. The styptic action of alum and ferric chloride solution is due to coagulation of blood forming a clot which stops further bleeding.