The equivalent weight of H2SO4 in the reactionNa2CO3+H2SO4⟶NaHSO4+CO2+H2O is:

Reaction :Na2CO3+H2SO4⟶NaHSO4+CO2+H2O      2H-atoms                     one H-atom∴  No. of replaceable H-atoms = 2-1 = 1.∴  Eq. wt. of  H2SO4= Mol. wt. of H2SO4 no. of replaceable H-atoms                                         =((2×1)+32+(4×16)1=98.So, the correct answer is (c).