Question

A blue litmus turns red when its seats with ________
a.salt
b.acid
c.base
d.none​

Answer 1

Answer- B) Acid

A blue litmus turns red when its seats with acid

Answer 2

Blue litmus turns red when its seats with acid. (Option b)

• Litmus is used to test or detect whether a solution is alkaline or acidic.
• They are used as pH indicators even though they do not give the exact pH value.
• Litmus is coated with a natural water-soluble dye obtained from lichens.
• They are usually available in red and blue colors.
• A blue litmus is used to test the acidity of a solution.
• The blue litmus turns red in the presence of acid which also indicates that the pH value is below 4.5.