If you touch concentrated HNO3 with your finger and immediately wash it with water, then the skin at the place where it came into contact with HNO3 becomes yellow. This is because of :

Question

If you touch concentrated HNO3 with your finger and immediately wash it with water, then the skin at the place where it came into contact with HNO3 becomes yellow. This is because of : (A) the formation of Xanthoprotein (B) the absorption of HNO3 by skin (C) the blood absorbing HNO3 (D) the absorption of yellow/brown NO2 gas

Tardigrade Admin · Accepted Answer

Nitric acid attacks proteins forming a yellow nitro compound called xanthoprotein. It therefore, stains skin and renders wool yellow. This property is utilised for the test of proteins.

Q. If you touch concentrated $H N O_{3}$ with your finger and immediately wash it with water, then the skin at the place where it came into contact with $H N O_{3}$ becomes yellow. This is because of :

the formation of Xanthoprotein

the absorption of $H N O_{3}$ by skin

the blood absorbing $H N O_{3}$

the absorption of yellow/brown $N O_{2}$ gas

Nitric acid attacks proteins forming a yellow nitro compound called xanthoprotein. It therefore, stains skin and renders wool yellow. This property is utilised for the test of proteins.

Q. If you touch concentrated HNO3​ with your finger and immediately wash it with water, then the skin at the place where it came into contact with HNO3​ becomes yellow. This is because of :

the formation of Xanthoprotein

the absorption of HNO3​ by skin

the blood absorbing HNO3​

the absorption of yellow/brown NO2​ gas

Nitric acid attacks proteins forming a yellow nitro compound called xanthoprotein. It therefore, stains skin and renders wool yellow. This property is utilised for the test of proteins.

Q. If you touch concentrated $H N O_{3}$ with your finger and immediately wash it with water, then the skin at the place where it came into contact with $H N O_{3}$ becomes yellow. This is because of :

the absorption of $H N O_{3}$ by skin

the blood absorbing $H N O_{3}$

the absorption of yellow/brown $N O_{2}$ gas