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CBSE Class 12-science Answered

why a drop of conc.HNO3 on hand makes hands yellow in colour ?
Asked by Gaurav Gaur | 18 Oct, 2013, 12:51: AM
Expert Answer
The yellow colour in nitric acid is due to dissolved NO2 in nitric acid.Nitric acid has a corrosive action on the skin and causes paniful blisters.It stains the skin yellow as it reacts with  protein  of the skin and forms xanthoproteic acid.
Answered by Vaibhav Chavan | 18 Oct, 2013, 10:00: AM
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