P-Block Elements Ques 361
Question: When $ HNO_3 $ is dropped into the palm and washed with water, it turns into yellow. It shows the presence of
[CPMT 1997]
Options:
A) $ NO_2 $
B) $ N_2O $
C) $ NO $
D) $ N_2O_5 $
Show Answer
Answer:
Correct Answer: A
Solution:
Nitric acid turns the skin yellow because it reacts with protein giving a yellow compound called xanthoprotein.
