Problem

Direction (Q. Nos. 24-28) This section contains 5 questions. When worked out will result in an integer from 0 to 9 (both inclusive). The ion

A^{n+}

is oxidised to

AO_3^-

MnO_4^-

, changing to

Mn^{2+}

in acidic medium. Given that

2.68 \times 10^{-3}

mole of

A^{n+}

requires

1.61 \times 10^{-3}

mole of

MnO_4^-

. Thus,

n