Inorganic Chemistry PYQ — Page 35

Among the following, the number of halide(s) which is/ are inert to hydrolysis is (A) ${\mathrm{BF}}_{3}$ (B) ${\mathrm{SiCl}}_{4}$ (C) ${\mathrm{PCl}}_{5}$ (D) ${\mathrm{SF}}_{6}$

The denticity of an organic ligand, biuret is :

The spin-only magnetic moment value of ${B}_{2}^{+}$ species is $\times {10}^{-2}\mathrm{BM}$ (Nearest integer) $[\text{ Given : }\sqrt{3}=1.73]$

The characteristics of elements $X,Y$ and $Z$ with atomic numbers, respectively, $33,53$ and $83$ are:

Which one of the following compounds of Group-$14$ elements is not known?

According to molecular orbital theory, the species among the following that does not exist is:

Match List-$I$ with List-$\mathrm{II}$. <table class="pyq-table"><tbody><tr><td></td><td>List-$I$ Electronic configuration of elements</td><td></td><td>List-$\mathrm{II}$ ${\Delta }_{i}H$ in $\mathrm{kJ}{\mathrm{mol}}^{-1}$</td></tr><tr><td>$(a)$</td><td>$1{s}^{2}2{s}^{2}$</td><td>$(p)$</td><td>$801$</td></tr><tr><td>$(b)$</td><td>$1{s}^{2}2{s}^{2}2{p}^{4}$</td><td>$(q)$</td><td>$899$</td></tr><tr><td>$(c)$</td><td>$1{s}^{2}2{s}^{2}2{p}^{3}$</td><td>$(r)$</td><td>$1314$</td></tr><tr><td>$(d)$</td><td>$1{s}^{2}2{s}^{2}2{p}^{1}$</td><td>$(s)$</td><td>$1402$</td></tr></tbody></table>Choose the most appropriate answer from the options given below:

Which one of the following is formed (mainly) when red phosphorus is heated in a sealed tube at $803K?$

Match List-I with List-II <table class="pyq-table"><tbody><tr><td></td><td>List - I (Elements)</td><td></td><td>List - II (Properties)</td></tr><tr><td>(a)</td><td>${\mathrm{SF}}_{4}$</td><td>$(i)$</td><td>${\mathrm{sp}}^{3}{d}^{2}$</td></tr><tr><td>(b)</td><td>${\mathrm{IF}}_{5}$</td><td>$(\mathrm{ii})$</td><td>${d}^{2}{\mathrm{sp}}^{3}$</td></tr><tr><td>(c)</td><td>${\mathrm{NO}}_{2}^{+}$</td><td>$(\mathrm{iii})$</td><td>${\mathrm{sp}}^{3}d$</td></tr><tr><td>(d)</td><td>${\mathrm{NH}}_{4}^{+}$</td><td>$(\mathrm{iv})$</td><td>${\mathrm{sp}}^{3}$</td></tr><tr><td></td><td></td><td>$(v)$</td><td>$\mathrm{sp}$</td></tr></tbody></table>Choose the correct answer from the options given below:

Chemical nature of the nitrogen oxide compound obtained from a reaction of concentrated nitric acid and ${P}_{4}{O}_{10}$ (in $4:1$ ratio) is:

The set that represents the pair of neutral oxides of nitrogen is:

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></td><td>Industrial process</td><td></td><td>Application</td></tr><tr><td>(a)</td><td>Haber's process</td><td>(i)</td><td>${\mathrm{HNO}}_{3}$ synthesis</td></tr><tr><td>(b)</td><td>Ostwald's process</td><td>(ii)</td><td>Aluminium extraction</td></tr><tr><td>(c)</td><td>Contact process</td><td>(iii)</td><td>${\mathrm{NH}}_{3}$ synthesis</td></tr><tr><td>(d)</td><td>Hall-Heroult process</td><td>(iv)</td><td>${H}_{2}{\mathrm{SO}}_{4}$ synthesis</td></tr></tbody></table> Choose the correct answer from the options given below:

The number of geometrical isomers found in the metal complexes $[{\mathrm{PtCl}}_{2}{({\mathrm{NH}}_{3})}_{2}],[\mathrm{Ni}(\mathrm{CO}{)}_{4}],[\mathrm{Ru}{({H}_{2}O)}_{3}{\mathrm{Cl}}_{3}]$ and ${[{\mathrm{CoCl}}_{2}{({\mathrm{NH}}_{3})}_{4}]}^{+}$ respectively, are:

Which one of the following correctly represents the order of stability of oxides, ${X}_{2}O;$ $(X=$ halogen $)?$

Which of the following is used as a catalyst in Contact process?

Identify the species having one $\pi$ -bond and maximum number of canonical forms from the following :

The number of optical isomers possible for ${[\mathrm{Cr}{({C}_{2}{O}_{4})}_{3}]}^{3-}$ is:

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$. Assertion $A:$ In $Tl{I}_{3},$ isomorphous to ${\mathrm{CsI}}_{3}$, the metal is present in $+1$ oxidation state. Reason $R:$ $Tl$ metal has fourteen $f$ electrons in its electronic configuration. In the light of the above statements, choose the most appropriate answer from the options given below:

${\mathrm{Fex}}_{2}$ and ${\mathrm{Fey}}_{3}$ are known when $x$ and $y$ are :

Number of $\mathrm{Cl}=O$ bonds in chlorous acid, chloric acid and perchloric acid respectively are:

Consider the sulphides $\mathrm{HgS},\mathrm{PbS},\mathrm{CuS},{\mathrm{Sb}}_{2}{S}_{3},{\mathrm{As}}_{2}{S}_{3}$ and $\mathrm{CdS}.$ Number of these sulphides soluble in $50%{\mathrm{HNO}}_{3}$ is ___________ .

The number of species below that have two lone pairs of electrons in their central atom is ___ (Round off to the Nearest integer) ${\mathrm{SF}}_{4},{\mathrm{BF}}_{4}^{-},{\mathrm{ClF}}_{3},{\mathrm{AsF}}_{3},{\mathrm{PCl}}_{5},{\mathrm{BrF}}_{5},{\mathrm{XeF}}_{4},{\mathrm{SF}}_{6}$

In the following the correct bond order sequence is:

Number of paramagnetic oxides among the following given oxides is $___________.$ ${\mathrm{Li}}_{2}O,\mathrm{CaO},{\mathrm{Na}}_{2}{O}_{2},{\mathrm{KO}}_{2},\mathrm{MgO}$ and ${K}_{2}O$