Following four solution are prepared by mixing different volumes of NaOH and HCI of different concentratoin pH of which one of them will be equal to 1?

Following the solutions were prepared by mixing different volumes of NaOH and HCl of different concentration-pH of which one of them will be equal to 1?

Following solutions were prepared by mixing different volumes of NaOH and HCI of different concentrations: (i) 60 mL M/10 HCl + 40 mL M/10 NaOH (ii) 55 mL M/10 HCl + 45 mL M/10 NaOH , (iii) 75 mL M/5 HCl + 25 mL M/5 NaOH (iv) 100 mL M/10 HCl + 100 mL M/10 NaOH pH of which one of them will be equal to 1?

Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations : (i) 60 mL (M/10 HCl) + 40 mL (M/10) NaOH (ii) 55mL (M /10 ) HCl + 45 mL ( M/10) NaOH (iii) 75 mL (M/5) HCl + 25 mL (M/5) NaOH (iv) 100 mL (M/10) HCl + 100 mL (M/10) NaOH pH of which one of them will be equal to 1 ?

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 ?