A solution turns red litmus blue, its pH is likely to be

(a) 1          (b) 4            (c) 5                (d) 10

 

Answer:

(d) 10

 

Explanation- 

We know that, In acidic medium, red litmus doesn't change colour. In a basic medium, red litmus turns blue.In a neutral medium, red litmus doesn't change colour.Since the solution turns red litmus blue, it is basic and pH of a basic medium > 7.

Therefore, (d) is correct.

  1. Class 10
  2. Chapter 2 Class 10 - Acids, Bases and Salts (Term 1)

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo