JEE Main Chemistry — Inorganic Chemistry previous year questions with solutions.
Among the following, which is the strongest oxidizing agent?
Which of the following has least tendency to liberate ${H}_{2}$ from mineral acids?
Which of the following will have maximum stabilization due to crystal field?
The number of bridged oxygen atoms present in compound $B$ formed from the following reactions is $\mathrm{Pb}{({\mathrm{NO}}_{3})}_{2}\overset{673K}{\longrightarrow }A+\mathrm{PbO}+{O}_{2}$ $A\overset{\mathrm{Dimerise}}{\longrightarrow }B$
Match List I with List II. <table class="pyq-table"><tbody><tr><td></td><td>List-I (Anion)</td><td></td><td>List-II (gas evolved on reaction with dil. ${H}_{2}{\mathrm{SO}}_{4}$)</td></tr><tr><td>(A)</td><td>${\mathrm{CO}}_{3}^{2-}$</td><td>(I)</td><td>Colourless gas which turns lead acetate paper black.</td></tr><tr><td>(B)</td><td>${S}^{2-}$</td><td>(II)</td><td>Colourless gas which turns acidified potassium dichromate solution green.</td></tr><tr><td>(C)</td><td>${\mathrm{SO}}_{3}^{2-}$</td><td>(III)</td><td>Brown fumes which turns acidified KI solution containing starch blue.</td></tr><tr><td>(D)</td><td>${\mathrm{NO}}_{2}^{-}$</td><td>(IV)</td><td>Colourless gas evolved with brisk effervescence, which turns lime water milky.</td></tr></tbody></table>Choose the correct answer from the options given below
How many of the following molecules are with non-zero net dipole moment, ${\mathrm{NH}}_{3},\mathrm{HCl},{H}_{2}O,{\mathrm{BeF}}_{2},{\mathrm{BH}}_{3},{\mathrm{CCl}}_{4}$
Which of the following is structure of a separating funnel?
Consider, ${\mathrm{PF}}_{5},{\mathrm{BrF}}_{5},{\mathrm{PCl}}_{3},{\mathrm{SF}}_{6},{[{\mathrm{ICl}}_{4}]}^{-},{\mathrm{ClF}}_{3}$ and ${\mathrm{IF}}_{5}$ Amongst the above molecule(s) ion(s), the number of molecule(s)/ion(s) having ${\mathrm{sp}}^{3}{d}^{2}$ hybridisation is
Consider the following reaction : $A+\mathrm{alkali}\rightarrow B(\mathrm{Major}Product)$ If $B$ is an oxoacid of phosphorus with no $P-H$ bond, then $A$ is
The disproportionation of ${\mathrm{MnO}}_{4}^{2-}$ in acidic medium resulted in the formation of two manganese compounds $A$ and $B$. If the oxidation state of $\mathrm{Mn}$ in $B$ is smaller than that of $A$, then the spin-only magnetic moment $(\mu )$ value of $B$ in $\mathrm{BM}$ is____ . (Nearest integer)
Polar stratospheric clouds facilitate the formation of
A white precipitate was formed when ${\mathrm{BaCl}}_{2}$ was added to water extract of an inorganic salt. Further, a gas $'X'$ with characteristic odour was released when the formed white precipitate was dissolved in dilute HCI. The anion present in the inorganic salt is:
The oxide which contains an odd electron at the nitrogen atom is
${\mathrm{Fe}}^{3+}$ cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of
Dinitrogen and dioxygen the main constituents of air do not react with each other in atmosphere to form oxides of nitrogen because
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>${\mathrm{Cl}}_{2}{O}_{7}$</td><td>(I)</td><td>Amphoteric</td></tr><tr><td>(B)</td><td>${\mathrm{Na}}_{2}O$</td><td>(II)</td><td>Basic</td></tr><tr><td>(C)</td><td>${\mathrm{Al}}_{2}{O}_{3}$</td><td>(III)</td><td>Neutral</td></tr><tr><td>(D)</td><td>${N}_{2}O$</td><td>(IV)</td><td>Acidic</td></tr></tbody></table>Choose the correct answer from the options given below
The type of hybridisation and magnetic property of the complex ${[{\mathrm{MnCl}}_{6}]}^{3-},$ respectively, are:
Given below are two statements : Statement I: ${[\mathrm{Mn}(\mathrm{CN}{)}_{6}]}^{3-},{[\mathrm{Fe}(\mathrm{CN}{)}_{6}]}^{3-}$ and ${[\mathrm{Co}{({C}_{2}{O}_{4})}_{3}]}^{3-}$ are ${d}^{2}{\mathrm{sp}}^{3}$ hybridised. Statement II : ${[{\mathrm{MnCl}}_{6}]}^{3-}$ and ${[{\mathrm{FeF}}_{6}]}^{3-}$ are paramagnetic and have $4$ and $5$ unpaired electrons, respectively. In the light of the above statements, choose the correct answer from the options given below:
Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : Size of ${\mathrm{Bk}}^{3+}$ ion is less than ${\mathrm{Np}}^{3+}$ ion. Reason R : The above is a consequence of the lanthanide contraction. In the light of the above statements, choose the correct answer from the options given below :
The sum of oxidation states of two silver ions in $[\mathrm{Ag}{({\mathrm{NH}}_{3})}_{2}][\mathrm{Ag}(\mathrm{CN}{)}_{2}]$ complex is _____ .
Arrange the following metal complex/ compounds in the increasing order of spin only magnetic moment. Presume all the three, high spin system. (Atomic numbers $\mathrm{Ce}=58,\mathrm{Gd}=64$ and $\mathrm{Eu}=63$.) (a) ${({\mathrm{NH}}_{4})}_{2}[\mathrm{Ce}{({\mathrm{NO}}_{3})}_{6}]$ (b) $\mathrm{Gd}{({\mathrm{NO}}_{3})}_{3}$ and (c) $\mathrm{Eu}{({\mathrm{NO}}_{3})}_{3}$
In which of the following order the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment? (i) ${[{\mathrm{FeF}}_{6}]}^{3-}$ (ii) ${[\mathrm{Co}{({\mathrm{NH}}_{3})}_{6}]}^{3+}$ (iii) ${[{\mathrm{NiCl}}_{4}]}^{2-}$ (iv) ${[\mathrm{Cu}{({\mathrm{NH}}_{3})}_{4}]}^{2+}$
The total number of unpaired electrons present in $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{2}$ and $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}$ is
The spin-only magnetic moment value of ${B}_{2}^{+}$ species is $\times {10}^{-2}\mathrm{BM}$ (Nearest integer) $[\text{ Given : }\sqrt{3}=1.73]$