Question

a solution turns red litmus blue, its pH is likely to be a.1 b.4 c.5 d.10​

Answer 1

Answer:

Red litmus becomes blue when it comes in contact

with bases.Its pH is likely to be 10.

Answer 2

As the solution turns "red litmus into blue", it is definitely a basic solution.

Thus, its pH must be basic that is above 7.

Hence the answer will be 10!