NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Chemistry
- Chapter
- Surface Chemistry
NTA Abhyas 2020 · Chemistry · Surface Chemistry
Bleeding is stopped by the application of ferric chloride. This is...
Bleeding is stopped by the application of ferric chloride. This is because:
Options
- AThe blood starts flowing in opposite direction
- BThe blood reacts and forms a solid, which seals the blood vessel
- CThe blood is coagulated and thus the blood vessel is sealed
- 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 {\text{FeCl}_{3} is a strong coagulant. Blood contains colloidal impurities and {\text{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.