Which one of the following solution of sulphuric acid will exactly neutralize 25 ml of 0.2 M NaOH solution?

a. 25 ml of 0.2 M solution

b. 12.5 ml of 0.1 M solution

c. 25 ml of 0.1 M solution

d. 50 ml of 0.2 M solution

Answer : c