Litmus test
This is the current revision of Litmus test as edited by Abcqwe (talk | contribs) at 12:33, April 9, 2017. This URL is a permanent link to this version of this page.
Litmus test refers to the use of litmus paper as a pH indicator. It is also a phrase referring to questions designed to determine a person's opinion of social issues.
Chemistry
In chemistry, a piece of litmus paper is placed in a solution. Chemical reactions with acids cause it to turn red, while reactions with alkalines cause it to turn blue.