JEE Main 2022 · 29 Jul · Shift 1 · Chemistry Q67

ChemistrySingle correct+4 / -1Question 67 of 90

Lithium nitrate and sodium nitrate, when heated separately, respectively, give :

\mathrm{LiNO_2}

and

\mathrm{NaNO_2}

\mathrm{Li_2O}

and

\mathrm{Na_2O}

\mathrm{Li_2O}

and

\mathrm{NaNO_2}

\mathrm{LiNO_2}

and

\mathrm{Na_2O}

Answer and worked solution

Official answer: C

Lithium behaves like magnesium: $\mathrm{4LiNO_3\to2Li_2O+4NO_2+O_2}$ . Sodium nitrate only loses oxygen: $\mathrm{2NaNO_3\to2NaNO_2+O_2}$ .

(C)

Topics:Alkali metals Important compounds of s-block

JEE Main 2022 · 29 Jul · Shift 1, Chemistry question 67