JEE Main Chemistry — Inorganic Chemistry previous year questions with solutions.
The number of terminal oxygen atoms present in the product $B$ obtained from the following reaction is ${\mathrm{FeCr}}_{2}{O}_{4}+{\mathrm{Na}}_{2}{\mathrm{CO}}_{3}+{O}_{2}\rightarrow A+{\mathrm{Fe}}_{2}{O}_{3}+{\mathrm{CO}}_{2}$ $A+{H}^{+}\rightarrow B+{H}_{2}O+{\mathrm{Na}}^{+}$
Concentrated ${\mathrm{HNO}}_{3}$ reacts with Iodine to give
${\mathrm{PCl}}_{5}+{H}_{2}O\rightarrow A+\mathrm{HCl}$ $A+{H}_{2}O\rightarrow B+\mathrm{HCl}$ Find number of ionisable hydrogen in $B$
Which one of the following elemental forms is not present in the enamel of the teeth?
The conductivity of a solution of complex with formula ${\mathrm{CoCl}}_{3}{({\mathrm{NH}}_{3})}_{4}$ corresponds to $1:1$ electrolyte, then the primary valency of central metal ion is
The metal ion (in gaseous state) with lowest spin-only magnetic moment value is
The most common oxidation state of Lanthanoid elements is $+3$. Which of the following is likely to deviate easily from $+3$ oxidation state?
The total number of acidic oxides from the following list is: $\mathrm{NO},{N}_{2}O,{B}_{2}{O}_{3},{N}_{2}{O}_{5},\mathrm{CO},{\mathrm{SO}}_{3},{P}_{4}{O}_{10}$
Transition metal complex with highest value of crystal field splitting $({\Delta }_{0})$ will be
In neutral or faintly alkaline medium, ${\mathrm{KMnO}}_{4}$ being a powerful oxidant can oxidise, thiosulphate almost quantitatively, to sulphate. In this reaction overall change in oxidation state of manganese will be
Among the given oxides of nitrogen ; ${N}_{2}O,{N}_{2}{O}_{3},{N}_{2}{O}_{4}$ and ${N}_{2}{O}_{5}$, the number of compound/(s) having $N-N$ bond is
The interhalogen compound formed from the reaction of bromine with excess of fluorine is a
The number of non-ionisable protons present in the product $B$ obtained from the following reaction is___${C}_{2}{H}_{5}\mathrm{OH}+{\mathrm{PCl}}_{3}\rightarrow {C}_{2}{H}_{5}\mathrm{Cl}+A$ $A+{\mathrm{PCl}}_{3}\rightarrow B$
Match List-I with List-II, match the gas evolved during each reaction. <table class="pyq-table"><tbody><tr><td></td><td>List-I</td><td></td><td>List-II</td></tr><tr><td>A</td><td>${({\mathrm{NH}}_{4})}_{2}{\mathrm{Cr}}_{2}{O}_{7}\overset{\Delta }{\longrightarrow }$</td><td>I</td><td>${H}_{2}$</td></tr><tr><td>B</td><td>${\mathrm{KMnO}}_{4}+\mathrm{HCl}\rightarrow$</td><td>II</td><td>${N}_{2}$</td></tr><tr><td>C</td><td>$\mathrm{Al}+\mathrm{NaOH}+{H}_{2}O\rightarrow$</td><td>III</td><td>${O}_{2}$</td></tr><tr><td>D</td><td>${\mathrm{NaNO}}_{3}\overset{\Delta }{\longrightarrow }$</td><td>IV</td><td>${\mathrm{Cl}}_{2}$</td></tr></tbody></table>Choose the correct answer from the options given below
Amongst the following the number of oxide(s) which are paramagnetic in nature is ${\mathrm{Na}}_{2}O,{\mathrm{KO}}_{2},{\mathrm{NO}}_{2},{N}_{2}O,{\mathrm{ClO}}_{2},\mathrm{NO},{\mathrm{SO}}_{2},{\mathrm{Cl}}_{2}O$
Given below are two statements : Statement I: The pentavalent oxide of group-$15$ element, ${E}_{2}{O}_{5}$, is less acidic than trivalent oxide, ${E}_{2}{O}_{3}$, of the same element. Statement II : The acidic character of trivalent oxide of group $15$ elements, ${E}_{2}{O}_{3}$, decreases down the group. In light of the above statements, choose most appropriate answer from the options given below
Amongst ${\mathrm{FeCl}}_{3}.3{H}_{2}O,{K}_{3}[\mathrm{Fe}{(\mathrm{CN})}_{6}]$ and $[\mathrm{Co}{({\mathrm{NH}}_{3})}_{6}]{\mathrm{Cl}}_{3}$, the spin-only magnetic moment value of the inner-orbital complex that absorbs light at shortest wavelength is B.M. [nearest integer]
The number of paramagnetic species among the following is ${B}_{2},{\mathrm{Li}}_{2},{C}_{2},{C}_{2}^{-},{O}_{2}^{2-},{O}_{2}^{+}$ and ${\mathrm{He}}_{2}^{+}$
What is the correct oder of electron gain enthalpy of $\mathrm{Cl},F,\mathrm{Te},\mathrm{Po}$
The IUPAC nomenclature of an element with electronic configuration $[\mathrm{Rn}]5{f}^{14}6{d}^{1}7{s}^{2}$ is
Given below are two statements: Statement I : The chlorides of $\mathrm{Be}$ and $\mathrm{Al}$ have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases. Statement II: Hydroxides of $\mathrm{Be}$ and $\mathrm{Al}$ dissolve in excess alkali to give beryllate and aluminate ions. In the light of the above statements. Choose the correct answer from the options given below.
Aqueous solution of which of the following boron compounds will be strongly basic in nature?
Number of lone pair $(s)$ of electrons on central atom and the shape of ${\mathrm{BrF}}_{3}$ molecule respectively, are :
${\mathrm{PCl}}_{5}$ is well known but ${\mathrm{NCl}}_{5}$ is not.Because,