JEE Main Chemistry — Inorganic Chemistry previous year questions with solutions.
Given below are two statements: Statement I: Potassium permanganate on heating at $573K$ forms potassium manganate. Statement II: Both potassium permanganate and potassium manganate are tetrahedral and paramagnetic in nature. In the light of the above statements, choose the most appropriate answer from the options given below:
On treating a compound with warm dil. ${H}_{2}{\mathrm{SO}}_{4}$, gas $X$ is evolved which turns ${K}_{2}{\mathrm{Cr}}_{2}{O}_{7}$ paper acidified with dil. ${H}_{2}{\mathrm{SO}}_{4}$ to a green compound $Y$. $X$ and $Y$ respectively are :
The product obtained from the electrolytic oxidation of acidified sulphate solutions, is :
Which of the following has the highest lattice energy?
Spin only magnetic moment of an octahedral complex of ${\mathrm{Fe}}^{2+}$ in the presence of a strong field ligand in BM is:
The total number of unpaired electrons present in the complex ${K}_{3}[\mathrm{Cr}(\text{oxalate}{)}_{3}]$ is______.
The compound/s which will show significant intermolecular $H$-bonding is/are : 
The characteristics of elements $X,Y$ and $Z$ with atomic numbers, respectively, $33,53$ and $83$ are:
The secondary valency and the number of hydrogen bonded water molecule(s) in ${\mathrm{CuSO}}_{4}\cdot 5{H}_{2}O$, respectively, are
The number of halogen/(s) forming halic $(V)$ acid is __________ .
The correct order of following $3d$ metal oxides, according to their oxidation numbers is : (a) ${\mathrm{CrO}}_{3}$ (b) ${\mathrm{Fe}}_{2}{O}_{3}$ (c) ${\mathrm{MnO}}_{2}$ (d) ${V}_{2}{O}_{5}$ (e) ${\mathrm{Cu}}_{2}O$
Among the following allotropic forms of sulphur, the number of allotropic forms, which will show paramagnetism is _______. (A) $\alpha$-sulphur (B) $\beta$-sulphur (C) ${S}_{2}$-form
In which of the following pairs, the outermost electronic configuration will be the same?
The common positive oxidation states for an element with atomic number $24,$ are:
The number of $4f$ electrons in the ground state electronic configuration of ${\mathrm{Gd}}^{2+}$ is [Atomic number of $\mathrm{Gd}=64]$
An aqueous solution of ${\mathrm{NiCl}}_{2}$ was heated with excess sodium cyanide in presence of strong oxidizing agent to form ${[\mathrm{Ni}(\mathrm{CN}{)}_{6}]}^{2-}.$ The total change in number of unpaired electrons on metal centre is ___________.
Given below are two statements:Statement I : $\alpha$ and $\beta$ forms of sulphur can change reversibly between themselves with slow heating or slow cooling. Statement II : At room temperature the stable crystalline form of sulphur is monoclinic sulphur. In the light of the above statements, choose the correct answer from the options given below:
Number of electrons present in $4f$ orbital of ${\mathrm{Ho}}^{3+}$ ion is ________ (Given Atomic No. of Ho =67)
The incorrect statement about ${B}_{2}{H}_{6}$ is :
Number of bridging $\mathrm{CO}$ ligands in $[{\mathrm{Mn}}_{2}{(\mathrm{CO})}_{10}]$ is
The set having ions which are coloured and paramagnetic both is -
Which one of the following when dissolved in water gives coloured solution in nitrogen atmosphere?
The set in which compounds have different nature is:
Match List-$I$ with List-$\mathrm{II}$. <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">List-$I$</td><td colspan="2" rowspan="1">List-$\mathrm{II}$</td></tr><tr><td colspan="2" rowspan="1">(Molecule)</td><td colspan="2" rowspan="1">(Bond order)</td></tr><tr><td>(a)</td><td>${\mathrm{Ne}}_{2}$</td><td>(i)</td><td>$1$</td></tr><tr><td>(b)</td><td>${N}_{2}$</td><td>(ii)</td><td>$2$</td></tr><tr><td>(c)</td><td>${F}_{2}$</td><td>(iii)</td><td>$0$</td></tr><tr><td>(d)</td><td>${O}_{2}$</td><td>(iv)</td><td>$3$</td></tr></tbody></table>Choose the correct answer from the options given below: