Inorganic Chemistry PYQ — Page 35

The correct order of electron gain enthalpy is:

Three moles of $\mathrm{AgCl}$ get precipitated when one mole of an octahedral co-ordination compound with empirical formula ${\mathrm{CrCl}}_{3}.3{\mathrm{NH}}_{3}.3{H}_{2}O$ reacts with excess of silver nitrate. The number of chloride ions satisfying the secondary valency of the metal ion is ______ .

The spin only magnetic moment of a divalent ion in aqueous solution (atomic number $29$) is ___ $\mathrm{BM}$.

Consider the elements $\mathrm{Mg},$ $\mathrm{Al},S,P$ and $\mathrm{Si},$ the correct increasing order of their first ionisation enthalpy is:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R : Assertion A : The $H-O-H$ bond angle in water molecule is $104.5^{\circ}$. Reason R : The lone pair $-$ lone pair repulsion of electrons is higher than the bond pair $-$ bond pair repulsion.

The correct shape and $I-I-I$ bond angles respectively in ${I}_{3}^{-}$ ion are:

${\mathrm{Al}}_{2}{O}_{3}$ was leached with alkali to get $X.$ The solution of $X$ on passing of gas $Y,$ forms $Z.$ $X,Y$ and $Z$ respectively are

The CORRECT order of first ionisation enthalpy is:

The correct structures of trans $-[\mathrm{NiBr}({\mathrm{PPh}}_{3})22]$ and meridional $-[\mathrm{Co}{({\mathrm{NH}}_{3})}_{3}{({\mathrm{NO}}_{2})}_{3}]$ respectively, are:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Metallic character decreases and non-metallic character increases on moving from left to right in a period. Reason (R): It is due to increase in ionisation enthalpy and decrease in electron gain enthalpy, when one moves from left to right in a period. In the light of the above statements, choose the most appropriate answer from the options given below :

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 absolute value of the electron gain enthalpy of halogens satisfies:

The denticity of an organic ligand, biuret is :

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:

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

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 correct order of bond dissociation enthalpy of halogens is:

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: