The normality of a mixture obtained by mixing 100 mL of 0.2 M H₂SO₄ with 100 mL of 0.2 M NaOH is:

$\begin{array}{l}\mathrm{mEq}\text{ of }{\mathrm{H}}_2{\mathrm{SO}}_4=100\times 0.2\times 2=40\\ \mathrm{mEq} \mathrm{NaOH}=100\times 0.2\times 1=20\\ \mathrm{mEq}\text{ of }{\mathrm{H}}_2{\mathrm{SO}}_4\text{ left }=40-20=20\\ \text{ Total volume }=100+100=200\mathrm{mL}\\ N\text{ solution }=\frac{20\mathrm{mEq}}{200\mathrm{mL}}=0.1\mathrm{N}\end{array}$