JEE Main Chemistry — Inorganic Chemistry previous year questions with solutions.
Match List-I with List-II <table class="pyq-table"><tbody><tr><td></td><td>List-I</td><td></td><td>List-II</td></tr><tr><td>A</td><td>${\Psi }_{\mathrm{MO}}={\Psi }_{A}-{\Psi }_{B}$</td><td>I</td><td>Dipole moment</td></tr><tr><td>B</td><td>$\mu =Q\times r$</td><td>II</td><td>Bonding molecular orbital</td></tr><tr><td>C</td><td>$\frac{{N}_{b}-{N}_{a}}{2}$</td><td>III</td><td>Anti-bonding molecualr orbital</td></tr><tr><td>D</td><td>${\Psi }_{\mathrm{MO}}={\Psi }_{A}+{\Psi }_{B}$</td><td>IV</td><td>Bond order</td></tr></tbody></table>
In which of the following pairs, electron gain enthalpies of constituent elements are nearly the same or identical? (A) $\mathrm{Rb}$ and $\mathrm{Cs}$ (B) Na and $K$ (C) $\mathrm{Ar}$ and $\mathrm{Kr}$ (D) $I$ and $\mathrm{At}$ Choose the correct answer from the options given below
Sum of oxidation state (magnitude) and coordination number of cobalt in $\mathrm{Na}[\mathrm{Co}(\mathrm{bpy}){\mathrm{Cl}}_{4}]$ is 
Given below are two statements : one is labelled as Assertion and the other is labelled as Reason. Assertion: The ionic radii of ${O}^{2-}$ and ${\mathrm{Mg}}^{2+}$ are same. Reason: Both ${O}^{2-}$ and ${\mathrm{Mg}}^{2+}$ are isoelectronic species. In the light of the above statements, choose the correct answer from the options given below.
Borazine, also known as inorganic benzene, can be prepared by the reaction of $3$-equivalents of "$X$" with $6$-equivalents of "$Y$". "$X$" and "$Y$", respectively are
Total number of relatively more stable isomer(s) possible for octahedral complex $[\mathrm{Cu}{(\mathrm{en})}_{2}{(\mathrm{SCN})}_{2}]$ will be____
Dinitrogen is a robust compound, but reacts at hig altitude to form oxides. The oxide of nitrogen the can damage plant leaves and retard photosynthes is
In the titration of ${\mathrm{KMnO}}_{4}$ and oxalic acid in acidic medium, the change in oxidation number of carbon at the end point is
Which oxoacid of phosphorous has the highest number of oxygen atoms present in its chemical formula?
Match List-I with List-II. <table class="pyq-table"><tbody><tr><td></td><td>List-I</td><td></td><td>List-II</td></tr><tr><td>A</td><td>$4{\mathrm{NH}}_{3}(g)+5{O}_{2}(g)\rightarrow 4\mathrm{NO}(g)+6{H}_{2}O(g)$</td><td>I</td><td>$\mathrm{NO}(g)$</td></tr><tr><td>B</td><td>${N}_{2}(g)+3{H}_{2}(g)\rightarrow 2{\mathrm{NH}}_{3}(g)$</td><td>II</td><td>${H}_{2}{\mathrm{SO}}_{4}(l)$</td></tr><tr><td>C</td><td>${C}_{12}{H}_{22}{O}_{11}(\mathrm{aq})+{H}_{2}O(l)\rightarrow {C}_{6}{H}_{12}{O}_{6}(\mathrm{Glucose})+{C}_{6}{H}_{12}{O}_{6}(\mathrm{Fructose})$</td><td>III</td><td>$\mathrm{Pt}(s)$</td></tr><tr><td>D</td><td>$2{\mathrm{SO}}_{2}(g)+{O}_{2}(g)\rightarrow 2{\mathrm{SO}}_{3}(g)$</td><td>IV</td><td>$\mathrm{Fe}(s)$</td></tr></tbody></table>Choose the correct answer from the options given below
The number of inter halogens from the following having square pyramidal structure is ${\mathrm{ClF}}_{3},{\mathrm{IF}}_{7},{\mathrm{BrF}}_{5},{\mathrm{BrF}}_{3},{I}_{2}{\mathrm{Cl}}_{6},{\mathrm{IF}}_{5},\mathrm{ClF},{\mathrm{ClF}}_{5}$
The most stable trihalide of nitrogen is.
The geometry around boron in the product '$B$' formed from the following reaction is ${\mathrm{BF}}_{3}+\mathrm{NaH}\overset{450K}{\longrightarrow }A+\mathrm{NaF}$ $A+{\mathrm{NMe}}_{3}\rightarrow B$
Among ${\mathrm{Co}}^{3+},{\mathrm{Ti}}^{2+},{V}^{2+}$ and ${\mathrm{Cr}}^{2+}$ ions, one if used as a reagent cannot liberate ${H}_{2}$ from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is _____ B.M. (Nearest integer)
The dark purple colour of ${\mathrm{KMnO}}_{4}$ disappears in the titration with oxalic acid in acidic medium. The overall change in the oxidation number of manganese in the reaction is
Dihydrogen reacts with $\mathrm{CuO}$ to give
Choose the correct stability order of group $13$ elements in their $+1$ oxidation state.
An acidified manganate solution undergoes disproportionation reaction. The spin-only magnetic moment value of the product having manganese in higher oxidation state is____B.M. (Nearest integer)
Outermost electronic configurations of four elements $A,B,C,D$ are given below: (A) $3{s}^{2}$ (B) $3{s}^{2}3{p}^{1}$ (C) $3{s}^{2}3{p}^{3}$ (D) $3{s}^{2}3{p}^{4}$ The correct order of first ionization enthalpy for them is
Element "$E$" belongs to the period $4$ and group $16$ of the periodic table. The valence shell electron configuration of the element, which is just above "$E$" in the group is
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason $R$. Assertion $A$ : Boric acid is a weak acid Reason $R$ : Boric acid is not able to release ${H}^{+}$ ion on its own. It receives ${\mathrm{OH}}^{-}$ ion from water and releases ${H}^{+}$ ion. In the light of the above statements, choose the most appropriate answer from the options given below.
The products obtained from a reaction of hydrogen peroxide and acidified potassium permanganate are
Bonding in which of the following diatomic molecule(s) become(s) stronger, on the basis of $\mathrm{MO}$ Theory, by removal of an electron? (A) $\mathrm{NO}$ (B) ${N}_{2}$ (C) ${O}_{2}$ (D) ${C}_{2}$ (E) ${B}_{2}$ Choose the most appropriate answer from the options given below :
Given below are two statements. One is labelled as Assertion $A$ and the other is labelled as Reason $R$. Assertion $A$ : The first ionization enthalpy for oxygen is lower than that of nitrogen. Reason $R$ : The four electrons in $2p$ orbitals of oxygen experience more electron-electron repulsion. In the light of the above statements, choose the correct answer from the options given below.