Join the Most Relevant JEE Main 2025 Test Series & get 99+ percentile! Join Now
Open MARKS Web Download App
Search any question & find its solution
Question: Answered & Verified by Expert
Bleeding due to a cut can be stopped by applying ferric chloride solution in the laboratory. This is due to
ChemistrySurface ChemistryJIPMERJIPMER 2018
Options:
  • A coagulation of negatively charged blood particles by Fe ${ }^{3+}$ ions.
  • B coagulation of positively charged blood particles by $\mathrm{Cl}^{-}$ions.
  • C reaction taking place between ferric ions and the haemoglobin forming a complex.
  • D common element, iron, in both $\mathrm{FeCl}_3$ and haemoglobin.
Solution:
2924 Upvotes Verified Answer
The correct answer is: coagulation of negatively charged blood particles by Fe ${ }^{3+}$ ions.
Bleeding due to a cut can be stopped by applying $\mathrm{FeCl}_3$ or alum solution. This is due to coagulation of negatively charged colloidal blood particles (albuminoid substance) by positively charged $\mathrm{Fe}^{3+}$ ions. These substances are used as styptic (which check the flow of blood).

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.

Use on iOS or Desktop Download from Google Play