JEE Main Chemistry — Inorganic Chemistry previous year questions with solutions.
The correct order of the number of unpaired electrons in the given complexes is (A) $[\mathrm{Fe}(\mathrm{CN}{)}_{6}{]}^{3-}$ (B) ${[{\mathrm{FeF}}_{6}]}^{3-}$ (C) ${[{\mathrm{CoF}}_{6}]}^{3-}$ (D) ${[\mathrm{Cr}(\mathrm{oxalate}{)}_{3}]}^{3-}$ (E) $[\mathrm{Ni}(\mathrm{CO}{)}_{4}]$ Choose the correct answer from the options given below:
The observed magnetic moment of the complex $[\mathrm{Mn}(\mathrm{NCS}{)}_{6}){]}^{x-}$ is $6.06\mathrm{BM}$. The numerical value of $x$ is
Match List-I with List-II.  Choose the correct answer from the options given below:
The correct order of spin only magnetic moments for the following complex ions is
The IUPAC name of ${K}_{3}[\mathrm{Co}({C}_{2}{O}_{4}{)}_{3}]$ is:
The complex cation which has two isomers is:
Which of the following complex will show largest splitting of d-orbitals?
The denticity of the ligand present in the Fehling's reagent is _____ .
Correct order of spin only magnetic moment of the following complex ions is: (Given At. No. $\mathrm{Fe}:26,\mathrm{Co}:27$)
Chiral complex from the following is : Here en = ethylene diamine
The d-electronic configuration of ${[{\mathrm{CoCl}}_{4}]}^{2-}$ in tetrahedral crystal field is ${e}^{m}{t}_{2}^{n}$. The sum of $m$ and number of unpaired electrons is
The primary and secondary valencies of cobalt respectively in $[\mathrm{Co}({\mathrm{NH}}_{3}{)}_{5}\mathrm{Cl}]{\mathrm{Cl}}_{2}$ are:
For compound having the formula ${\mathrm{GaAlCl}}_{4}$, the correct option from the following is
The complex with highest magnitude of crystal field splitting energy $({\Delta }_{0})$ is
Match List I with List II <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">List I (molecules/ions)</td><td colspan="2" rowspan="1">List II (No. of lone pairs of ${e}^{-}$ on central atom)</td></tr><tr><td>(A)</td><td>${\mathrm{IF}}_{7}$</td><td>I.</td><td>Three</td></tr><tr><td>(B)</td><td>${\mathrm{ICl}}_{4}^{-}$</td><td>II.</td><td>One</td></tr><tr><td>(C)</td><td>${\mathrm{XeF}}_{6}$</td><td>III.</td><td>Two</td></tr><tr><td>(D)</td><td>${\mathrm{XeF}}_{2}$</td><td>IV.</td><td>Zero</td></tr></tbody></table>Choose the correct answer from the options given below:
The pair of lanthanides in which both elements have high third-ionization energy is:
One mole of ${P}_{4}$ reacts with $8$ moles of ${\mathrm{SOCl}}_{2}$ to give $4$ moles of $A$, $x$ mole of ${\mathrm{SO}}_{2}$ and $2$ moles of $B$. $A,B$ and $x$ respectively are
Formulae for Nessler's reagent is:
The correct order of bond enthalpy ($\mathrm{kJ}{\mathrm{mol}}^{–1}$) is:
Given below are two statements : One is labelled as $\mathrm{Assertion}A$ and the other is labelled as $\mathrm{Reason}R$. $\mathrm{Assertion}A:$ Butan–$1$–ol has higher boiling point than ethoxyethane. $\mathrm{Reason}R:$ Extensive hydrogen bonding leads to stronger association of molecules. In the light of the above statements, choose the correct answer from the options given below :
Better method for preparation of ${\mathrm{BeF}}_{2}$, among the following is
Statement I:- Dipole moment is a vector quantity and by convention it is depicted by a small arrow with tail on the negative centre and head pointing towards the positive centre. Statement II:- The crossed arrow of the dipole moment symbolizes the direction of the shift of charges in the molecules. In the light of the above statements, choose the most appropriate answer from the options given below:-
Group-$13$ elements react with ${O}_{2}$ in amorphous form to form oxides of type ${M}_{2}{O}_{3}$ ($M=$ element). Which among the following is the most basic oxide?
Formation of which complex, among the following, is not a confirmatory test of ${\mathrm{Pb}}^{2+}$ ions