Question bank/NEET UG/Chemistry

NEET UGChemistryModerateRe-NEET 2026

Given below are two statements :

Statement-I : Heating NaCl with concentrated H2_2SO4_4 and MnO2_2 results in oxidation of Mn.

Statement-II : Heating NaI with concentrated H2_2SO4_4 and MnO2_2 results in reduction of Mn.

In light of the above statements, choose the most appropriate answer from the options given below.

Show answer and solution
Sol. Statement-I : (False)

2NaCl+MnO2+4+2H2SO4→Na2SO4+MnSO4+2+2H2O+Cl22NaCl + \stackrel{+4}{MnO_2} + 2H_2SO_4 \rightarrow Na_2SO_4 + \stackrel{+2}{MnSO_4} + 2H_2O + Cl_2

So, reduction of Mn is taking place.

Statement-II : (True)

2NaI+MnO2+4+2H2SO4→Na2SO4+MnSO4+2+I2+2H2O2NaI + \stackrel{+4}{MnO_2} + 2H_2SO_4 \rightarrow Na_2SO_4 + \stackrel{+2}{MnSO_4} + I_2 + 2H_2O

So, Mn has undergone reduction.

Source: geekyrakshit/indian-exam-questions / reneet2026-code50

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