Exam-Focused Points
-
Indelible ink has been used in Indian elections since 1962 .
-
Silver nitrate is the key chemical responsible for the lasting stain.
-
Developed by the National Physical Laboratory of India .
-
Manufactured exclusively by Mysore Paints and Varnish Ltd .
-
Applied on the left index finger after voting.
-
Ink mark on the nail can last up to four weeks under normal conditions.
Month: Current Affairs - January 17, 2026
Category: Polity | Elections | Democratic Processes