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.



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