A solution turns red litmus blue,
Question.
A solution turns red litmus blue, its $\mathrm{pH}$ is likely to be
(1) 1
(2) 4
(3) 5
(4) 10
A solution turns red litmus blue, its $\mathrm{pH}$ is likely to be
(1) 1
(2) 4
(3) 5
(4) 10
solution:
(4) 10
(4) 10