Question

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

NCERT Class X
Science - Science

Chapter_Acids Bases and Salts

Answer 1

the answer is (d) 10 because red litumus turns blue when it comes in contact to any base and pH10 means base.

Answer 2

A solution that turns red litmus blue has pH d) pH = 10

Explanation:

It is a basic medium, hence, it will be pH of solution that changes red litmus to blue.

The pH of any solution is the measurement of acidic and basic nature of solution. The range of pH assigns from 0 to 14.

Here the point 7 indicates the neutral medium whereas from 0-7 it will be acidic medium. The pH range from 7-14 is for basic medium. We can also check the acidic and basic nature from litmus paper. The blue litmus paper changes to red in acidic medium whereas red changes to blue in basic medium.