Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations :
(A) 60 mL M/10 HCl + 40 mL M/10 NaOH
(B) 55 mL M/10 HCl + 45 mL M/10 NaOH
(C) 75 mL M/5 HCl + 25 mL M/5 NaOH
(D) 100 mL M/10 HCl + 100 mL M/10 NaOH
pH of which one of them will be equal to 1?
(a) B
(b) A
(c) D
(d) C
