IIT-JEE 2012 · Paper 1 · Chemistry Q29

ChemistrySingle correct+3 / -1Question 29 of 60

Which ordering of compounds is according to the decreasing order of the oxidation state of nitrogen?

\ce{HNO3}

, NO,

\ce{NH4Cl}

\ce{N2}

\ce{HNO3}

, NO,

\ce{N2}

\ce{NH4Cl}

\ce{HNO3}

\ce{NH4Cl}

, NO,

\ce{N2}

NO,

\ce{HNO3}

\ce{NH4Cl}

\ce{N2}

Answer and worked solution

Official answer: B

Oxidation states of N. $\ce{HNO3}$ : +5; NO: +2; $\ce{N2}$ : 0; $\ce{NH4Cl}$ : −3.

Decreasing order: $\ce{HNO3}>\ce{NO}>\ce{N2}>\ce{NH4Cl}$ .

(B)

Topics:Oxidation number

IIT-JEE 2012 · Paper 1, Chemistry question 29