Verified Solution • 2025–26 Session moderate

QJEEM23Ch0158: JEE Main 2023 Chemistry - Class 12 JEEM23Ch0158 Solution: Ferric chloride is applied to stop bleeding because -

Ferric chloride is applied to stop bleeding because -

Multiple Choice Options

  • A FeCl3\mathrm{FeCl}_{3} reacts with the constituents of blood which is a positively charged sol.
  • B Blood absorbs FeCl3\mathrm{FeCl}_{3} and forms a complex.
  • C Cl−\mathrm{Cl}^{-} ions cause coagulation of blood.
  • D Fe3+\mathrm{Fe}^{3+} ions coagulate blood which is a negatively charged sol.

Step-by-Step Verified Solution

The correct answer is Option D: Fe3+ ions coagulate blood which is a negatively charged sol.

Blood is a colloidal solution, which means that it is made up of small particles suspended in a liquid. The particles in blood are negatively charged, and the negative charge prevents the particles from clumping together. When ferric chloride is applied to a bleeding wound, the Fe3+ ions in the ferric chloride react with the negatively charged particles in the blood. This reaction causes the particles to clump together, forming a clot that stops the bleeding.

The other options are incorrect:

  • Option A is incorrect. Blood is not a positively charged sol.

  • Option B is incorrect. Blood does not absorb ferric chloride.

  • Option C is incorrect. Cl- ions do not cause coagulation of blood.

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring