To neutralize 1 mole of sulfuric acid, 2 moles of sodium hydroxide are required.?

M is a measurement of concentration in moles/L. This means that you have one mole of H2SO4 (multiply 1L x 1 mole H2SO4/1L). There are two H+ ions for every 1 mole of H2SO4 and you need one mole OH- for every one mole H+ (neutralization is H+ + (OH-) ---> H2O)