Question

What is the color of litmus paper in an alkali

Answer 1

blue litmus paper turns red and red litmus paper turns in blue in alkali conditions

Answer 2

Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic condition in an alkali

Or alkaline condition, with the color change over the pH range 4.5 - 8.3 at 25° C (77° F). Neutral litmus paper is purple.