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JEE Main levelSingle correct optionDifficulty 2 of 3pb116

Which of the following is a strong oxidising agent, oxidising conc. HCl to $Cl X_{2}$ ?

A $PbO X_{2}$
B $SnO X_{2}$
C $CO X_{2}$
D $SiO X_{2}$

Answer: A

Because of the inert pair effect the +2 state of Pb is more stable than +4, so

PbO X_{2}

is easily reduced:

PbO X_{2} + 4 HCl PbCl X_{2} + Cl X_{2} + 2 H X_{2} O

. The others do not do this.

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