Alum is often used to stop bleeding from cuts. This is because

Question

Alum is often used to stop bleeding from cuts. This is because (A) alum is antiseptic (B) alum reacts with blood and forms a complex (C) Al3+ ions are highly effective in coagulating negatively charged colloids such as blood, muddy water etc. due to their high charge (D) alum contains SO2-4 ions

Tardigrade Admin · Accepted Answer

Al3+ ions due to their higher charge are highly effective in coagulating negatively charged colloids such as blood and bleeding is stopped

Q. Alum is often used to stop bleeding from cuts. This is because

alum is antiseptic

alum reacts with blood and forms a complex

$A l^{3 +}$ ions are highly effective in coagulating negatively charged colloids such as blood, muddy water etc. due to their high charge

alum contains $S O_{4}^{2 -}$ ions

$A l^{3 +}$ ions due to their higher charge are highly effective in coagulating negatively charged colloids such as blood and bleeding is stopped