JEE Main Chemistry — Inorganic Chemistry previous year questions with solutions.
Acidified potassium permanganate solution oxidises oxalic acid. The spin-only magnetic moment of the mangenese product formed from the above reaction is B.M.___(Nearest Integer)
The correct order of energy of absorption for the following metal complexes is $A:{[\mathrm{Ni}{(\mathrm{en})}_{3}]}^{2+},B:{[\mathrm{Ni}{({\mathrm{NH}}_{3})}_{6}]}^{2+},C:{[\mathrm{Ni}{({H}_{2}O)}_{6}]}^{2+}$
The correct order of melting points of hydrides of group $16$ elements is
Given two statements below : Statement I : In ${\mathrm{Cl}}_{2}$ molecule the covalent radius is double of the atomic radius of chlorine. Statement II : Radius of anionic species is always greater than their parent atomic radius. Choose the most appropriate answer from options given below
Number of complexes which will exhibit synergic bonding amongst, $[\mathrm{Cr}{(\mathrm{CO})}_{6}],[\mathrm{Mn}{(\mathrm{CO})}_{5}]$ and $[{\mathrm{Mn}}_{2}{(\mathrm{CO})}_{10}]$ is
The gas produced by treating an aqueous solution of ammonium chloride with sodium nitrite is
Amongst ${\mathrm{SF}}_{4},{\mathrm{XeF}}_{4},{\mathrm{CF}}_{4}$ and ${H}_{2}O$, the number of species with two lone pairs of electrons is
Consider the following metal complexes : ${[\mathrm{Co}({\mathrm{NH}}_{3})]}^{3+}$ ${[\mathrm{CoCl}{({\mathrm{NH}}_{3})}_{5}]}^{2+}$ ${[\mathrm{Co}(\mathrm{CN}{)}_{6}]}^{3-}$ ${[\mathrm{Co}{({\mathrm{NH}}_{3})}_{5}({H}_{2}O)]}^{3+}$ The spin-only magnetic moment value of the complex that absorbs light with shortest wavelength is B.M. (Nearest integer)
In the structure of ${\mathrm{SF}}_{4}$, the lone pair of electrons on $S$ is in.
Consider the ions/molecule ${O}_{2}^{+},{O}_{2},{O}_{2}^{-},{O}_{2}^{2-}$. For increasing bond order the correct option is
Which of the following pair of molecules contain odd electron molecule and an expanded octet molecule?
The number of statement(s) correct from the following for Copper is/are (A) $\mathrm{Cu}(\mathrm{II})$ complexes are always paramagnetic (B) $\mathrm{Cu}(I)$ complexes are generally colourless (C) $\mathrm{Cu}(I)$ is easily oxidized (D) In Fehling solution, the active reagent has $\mathrm{Cu}(I)$
The difference between spin only magnetic moment values of $[\mathrm{Co}{({H}_{2}O)}_{6}]{\mathrm{Cl}}_{2}$ and $[\mathrm{Cr}{({H}_{2}O)}_{6}]{\mathrm{Cl}}_{3}$ is
In the cobalt-carbonyl complex : $[{\mathrm{Co}}_{2}{(\mathrm{CO})}_{8}]$, number of $\mathrm{Co}-\mathrm{Co}$ bonds is "$X$" and terminal $\mathrm{CO}$ ligands is " $Y$". $X+Y=$___
The total number of $\mathrm{Mn}=O$ bonds in ${\mathrm{Mn}}_{2}{O}_{7}$ is
White phosphorus reacts with thionyl chloride to give
The spin only magnetic moment of the complex present in Fehling's reagent is____$B.M.$ (Round off your answer to the nearest integer)
The spin-only magnetic moment value of the compound with strongest oxidizing ability among ${\mathrm{MnF}}_{4},{\mathrm{MnF}}_{3}$ and ${\mathrm{MnF}}_{2}$ is_____ $B.M$ (nearest integer)
Given below are two statements : One is labelled as Assertion $A$ and the other is labelled as Reason $R$ Assertion $A$ : Zero orbital overlap is an out of phase overlap. Reason $R$ : It results due to different orientation/ direction of approach of orbitals. In the light of the above statements. Choose the correct answer from the options given below
Arrange the following in the decreasing order of their covalent character : (A) $\mathrm{LiCl}$ (B) $\mathrm{NaCl}$ (C) $\mathrm{KCl}$ (D) $\mathrm{CsCl}$ Choose the most appropriate answer from the options given below
Nitrogen gas is obtained by thermal decomposition of:
In the flame test of a mixture of salts, a green flame with blue centre was observed. Which one of the following cations may be present?
The spin-only magnetic moment value of an octahedral complex among ${\mathrm{CoCl}}_{3}\cdot 4{\mathrm{NH}}_{3}$, ${\mathrm{NiCl}}_{2}\cdot 6{H}_{2}O$ and ${\mathrm{PtCl}}_{4}\cdot 2\mathrm{HCl}$, which upon reaction with excess of ${\mathrm{AgNO}}_{3}$ gives $2$ moles of $\mathrm{AgCl}$ is_____B.M. (Nearest Integer)
Based upon VSEPR theory, match the shape (geometry) of the molecules in List-I with the molecules in List - II and select the most appropriate option. <table class="pyq-table"><tbody><tr><td></td><td>List-I (Shape)</td><td></td><td>List-II (Molecules)</td></tr><tr><td>A</td><td>T-shaped</td><td>I.</td><td>${\mathrm{XeF}}_{4}$</td></tr><tr><td>B</td><td>Trigonal planar</td><td>II.</td><td>${\mathrm{SF}}_{4}$</td></tr><tr><td>C</td><td>Square planar</td><td>III.</td><td>${\mathrm{ClF}}_{3}$</td></tr><tr><td>D</td><td>See-saw</td><td>IV.</td><td>${\mathrm{BF}}_{3}$</td></tr></tbody></table>