Medium MCQ +4 / -1 PYQ · JEE Mains 2021

Most suitable salt which can be used for efficient clotting of blood will be :

  1. A Mg(HCO<sub>3</sub>)<sub>2</sub>
  2. B NaHCO<sub>3</sub>
  3. C FeCl<sub>3</sub> Correct answer
  4. D FeSO<sub>4</sub>

Solution

<p>According to Hardy-Schulze rule, for negatively charged sol, most (+ve) charged ion is needed for efficient coagulation.</p> <p>Blood is a negatively charged sol. Hence FeCl<sub>3</sub> can be used for blood clotting and it from Fe<sup>3+</sup> ion.</p>

About this question

Subject: Chemistry · Chapter: Surface Chemistry · Topic: Adsorption

This question is part of PrepWiser's free JEE Main question bank. 64 more solved questions on Surface Chemistry are available — start with the harder ones if your accuracy is >70%.

Drill 25 more like these. Every day. Free.

PrepWiser turns these solved questions into a daily practice loop. Chapter-wise drills, full mocks, AI doubt chat. No auto-renew.

Start free →