Question:
Why does the bleeding stop by rubbing moist alum?
Solution:
Moist alum has highly charged Al3+ and SO42- ions which neutralize the charged protein molecules present in the blood. This results in the coagulation of blood proteins and stops bleeding.
Click here to get exam-ready with eSaral
For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.