JEE Main Previous Year Papers Questions of Chemistry With Solutions are available at eSaral.

*Simulator*

**Previous Years AIEEE/JEE Mains Questions**

(1) $\mathrm{LiNO}_{2}+\mathrm{O}_{2}$

(2) $\mathrm{Li}_{2} \mathrm{O}+\mathrm{NO}_{2}+\mathrm{O}_{2}$

(3) $\mathrm{Li}_{3} \mathrm{N}+\mathrm{O}_{2}$

(4) $\mathrm{Li}_{2} \mathrm{O}+\mathrm{NO}+\mathrm{O}_{2}$

**[AIEEE-2011]**

**Sol.**(2)

Fact based.

(1) Oxidation number of sodium decreases

(2) Oxide ion accepts sharing in a pair of electrons

(3) Oxide ion donates a pair of electrons

(4) Oxidation number of oxygen increases

**Sol.**(3)

$\mathrm{O}^{-2}+\mathrm{H}^{\ominus} \rightarrow \mathrm{O}-\mathrm{H}\left\{\mathrm{O}^{-2} \rightarrow \mathrm{H}^{\ominus}\right\}$

(1) $\mathrm{NH}_{4} \mathrm{NO}_{3}$

(2) NaNO $_{3}$

(3) $\mathrm{KClO}_{3}$

(4) CaCO $_{3}$

**[AIEEE-2012] **

**Sol.**(4)

(1) $\mathrm{CaCO}_{3}$

(2) $\mathrm{NaHCO}_{3}$ and $\mathrm{Na}_{2} \mathrm{CO}_{3}$

(3) $\mathrm{Na}_{2} \mathrm{CO}_{3}$

(4) $\mathrm{NaHCO}_{3}$

**[JEE MAIN-2012, Online]**

**Sol.**(4)

Solution not required

(1) RbCl

(2) LiCl

(3) KCl

(4) NaCl

** [JEE MAIN-2012, Online]**

**Sol.**(4)

NaCl having highest lattice energy have highest melting point among these.

(1) Li (2) K (3) Rb (4) Na

**[JEE MAIN-2012, Online]**

**Sol.**(3)

Down the group reactivity of s-block metals increases.

(1) $\mathrm{NH}_{3}$

(2) MgO

(3) $\mathrm{Mg}_{3} \mathrm{N}_{2}$

(4) $\mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2}$

[**JEE MAIN-2012, Online]**

**Sol.**(3)

$\mathrm{M}+\mathrm{N}_{2} \rightarrow$ metal nitride (y) so according to the given options answer is (3)

(1) it contains $\mathrm{Cs}^{3+}$ and I– ions

(2) it contains $\mathrm{Cs}^{+}$, I– and lattice I2 molecule

(3) it is a covalent molecule

(4) it contains $\mathrm{Cs}^{+}$ and ions.

**[JEE(Main)-2014]**

**Sol.**(4)

$\mathrm{CsI}_{3}$ is ionic compound which have $\mathrm{Cs}^{\oplus}$ and $\mathrm{I}_{3}^{\oplus}$ ion.

**not**correct ?

(1) $\mathrm{Na}_{2} \mathrm{O}_{2}$ oxidises $\mathrm{Cr}^{3+}$ to $\mathrm{CrO}_{4}^{2-}$ in acid medium

(2) It is diamagnetic in nature

(3) It is the super oxide of sodium

(4) It is a derivative of $\mathrm{H}_{2} \mathrm{O}_{2}$

**[JEE MAIN-2014, Online]**

**Sol.**(3)

$\mathrm{Na}_{2} \mathrm{O}_{2}$ is sodium peroxide not the superoxide.

(1) $\mathrm{RbCl}$ and $\mathrm{MgCl}_{2}$

(2) LiCl and RbCl

(3) $\mathrm{MgCl}_{2}$ and $\mathrm{BeCl}_{2}$

(4) $\mathrm{RbCl}$ and $\mathrm{BeCl}_{2}$

**[JEE MAIN-2014, Online]**

**Sol.**(4)

Due to smallest cationic size $\mathrm{BeCl}_{2}$ is least ionic while due to biggest ionic size of $\mathrm{Rb}^{\oplus}$, RbCl has greatest ionic character.

** [JEE(Main)Online-2015]**

**Sol.**(3)

For the ionic compound having polyatomic anion, thermal stability increases down the group.

(1) $\mathrm{SrCl}_{2}$

(2) $\mathrm{CaCl}_{2}$

(3) $\mathrm{BeCl}_{2}$

(4) $\mathrm{MgCl}_{2}$

** [JEE(Main)Online-2015]**

**Sol.**(3)

Fact based.

super still want more

If every year questions were available then it would be more helpful!!!anyways thank you☺☺

thanqu so much for these valuable question…it is very helpfull for medical aspirants

Bhai 2020 tk ke questions post kr dete please