Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas JEE Main2020ChemistrySurface ChemistryPractice

Bleeding is stopped by the application of ferric chloride. This is because:

Options

  1. AThe blood starts flowing in opposite direction
  2. BThe blood reacts and forms a solid, which seals the blood vessel
  3. CThe blood is coagulated and thus the blood vessel is sealed
  4. DThe ferric chloride seals the blood vessel

Correct answer

C. The blood is coagulated and thus the blood vessel is sealed

Step-by-step solution

Blood is a colloidal solution and FeCl 3 is a strong coagulant. Blood contains colloidal impurities and FeCl 3 neutralizes the charge on these colloidal impurities and clotting of blood begins which blocks the vessels and prevents any further flow of blood.

Practice Surface Chemistry on Quantrex Academy →

More from Surface Chemistry

At a given temperature, 0.45 g of acetic acid in 50 mL of water is shaken with 1.0 g of charcoal and the pH of the resulting solution is 3.0 . Assume, the adsorption of acetic acid 2026Adsorption of phenol from its aqueous solution on to fly ash obeys Freundlich isotherm. At a given temperature, from 10 mg g ⁻¹ and 16 mg g ⁻¹ aqueous phenol solutions, the concent 2025Consider the following statements related to colloids. (I) Lyophobic colloids are not formed by simple mixing of dispersed phase and dispersion medium. (II) For emulsions, both the 202320 mL of 0 . 5 M NaCl is required to coagulate 200 mL of As 2 S 3 solution in 2 hours. The coagulating value of NaCl is ___________. 2023Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The diameter of colloidal particles in solution should not be mu 2023What happens when a lyophilic sol is added to a lyophobic sol? 2023Four gases, A , B , C and D have critical temperatures 5 . 3 , 33 . 2 , 126 . 0 and 154 . 3 K respectively For their adsorption on a fixed amount of charcoal, the correct order is 2023The number of correct statements about modern adsorption theory of heterogeneous catalysis from the following is ...... A. The catalyst is diffused over the surface of reactants. B 2023 Full Surface Chemistry list All NTA Abhyas JEE Main PYQs