Multiple choice

Election ink or indelible ink, which is applied to fingers of voters during elections to prevent double voting, contains ___________ which makes the stain on the skin impossible to wash off.

  1. potassium permanganate

  2. silver nitrate

  3. silver bromide

  4. cellulose acetate

  5. sodium iodide

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Indelible ink used in elections contains silver nitrate, which reacts with skin proteins and light to leave a stain that is difficult to remove.