Inorganic Chemistry PYQ — Page 33

Which of the following oxoacids of sulphur contains "S" in two different oxidation states?

Acidified potassium permanganate solution oxidises oxalic acid. The spin-only magnetic moment of the mangenese product formed from the above reaction is B.M.___(Nearest Integer)

The metal that has very low melting point and its periodic position is closer to a metalloid is

Number of electron deficient molecules among the following ${\mathrm{PH}}_{3},{B}_{2}{H}_{6},{\mathrm{CCl}}_{4},{\mathrm{NH}}_{3},\mathrm{LiH}$ and ${\mathrm{BCl}}_{3}$ is

Nitrogen gas is obtained by thermal decomposition of:

Which of the following has least tendency to liberate ${H}_{2}$ from mineral acids?

The number of bridged oxygen atoms present in compound $B$ formed from the following reactions is $\mathrm{Pb}{({\mathrm{NO}}_{3})}_{2}\overset{673K}{\longrightarrow }A+\mathrm{PbO}+{O}_{2}$ $A\overset{\mathrm{Dimerise}}{\longrightarrow }B$

Heating white phosphorus with conc. $\mathrm{NaOH}$ solution gives mainly

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 :

The number of terminal oxygen atoms present in the product $B$ obtained from the following reaction is ${\mathrm{FeCr}}_{2}{O}_{4}+{\mathrm{Na}}_{2}{\mathrm{CO}}_{3}+{O}_{2}\rightarrow A+{\mathrm{Fe}}_{2}{O}_{3}+{\mathrm{CO}}_{2}$ $A+{H}^{+}\rightarrow B+{H}_{2}O+{\mathrm{Na}}^{+}$

Which statement is not true with respect to nitrate ion test?

The first ionization enthalpy of $\mathrm{Na},\mathrm{Mg}$ and $\mathrm{Si}$, respectively, are: $496,737$ and $786\mathrm{kJ}{\mathrm{mo}1}^{-1}$. The first ionization enthalpy $({\mathrm{kJmol}}^{-1})$ of $\mathrm{Al}$ is

Match List-I with List-II <table class="pyq-table"><tbody><tr><td></td><td>List-I (Complex)</td><td></td><td>List-II (Hybridization)</td></tr><tr><td>A</td><td>$\mathrm{Ni}{(\mathrm{CO})}_{4}$</td><td>I</td><td>${\mathrm{sp}}^{3}$</td></tr><tr><td>B</td><td>${[\mathrm{Ni}{(\mathrm{CN})}_{4}]}^{2-}$</td><td>II</td><td>${\mathrm{sp}}^{3}{d}^{2}$</td></tr><tr><td>C</td><td>${[\mathrm{Co}{(\mathrm{CN})}_{6}]}^{3-}$</td><td>III</td><td>${d}^{2}{\mathrm{sp}}^{3}$</td></tr><tr><td>D</td><td>${[{\mathrm{CoF}}_{6}]}^{3-}$</td><td>IV</td><td>${\mathrm{dsp}}^{2}$</td></tr></tbody></table>Choose the correct answer from the options given below

Consider the following sulphure based oxoacids. ${H}_{2}{\mathrm{SO}}_{3},{H}_{2}{\mathrm{SO}}_{4},{H}_{2}{S}_{2}{O}_{8}$ and ${H}_{2}{S}_{2}{O}_{7}$. Amongst these oxoacids, the number of those with peroxo $(O-O)$bond is

Octahedral complexes of copper $(\mathrm{II})$ undergo structural distortion (Jahn-Teller). Which one of the given copper $(\mathrm{II})$ complexes will show the maximum structural distortion? (en-ethylenediamine; ${H}_{2}N-{\mathrm{CH}}_{2}-{\mathrm{CH}}_{2}-{\mathrm{NH}}_{2}$)

Given below are two statements . Statement $I$ : In ${\mathrm{CuSO}}_{4}\cdot 5{H}_{2}O,\mathrm{Cu}-O$ bonds are present. Statement $\mathrm{II}$ : In ${\mathrm{CuSO}}_{4}.5{H}_{2}O$, ligands coordinating with $\mathrm{Cu}(\mathrm{II})$ ion are $O$-and $S$-based ligands. In the light of the above statements, choose the correct answer from the options given below

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 calculated magnetic moments (spin only value) for species ${[{\mathrm{FeCl}}_{4}]}^{2-},{[\mathrm{Co}{({C}_{2}{O}_{4})}_{3}]}^{3-}$ and ${\mathrm{MnO}}_{4}^{2-}$ respectively are:

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>$[\mathrm{Co}{({\mathrm{NH}}_{3})}_{6}][\mathrm{Cr}(\mathrm{CN}{)}_{6}]$</td><td>i</td><td>Linkage isomerism</td></tr><tr><td>b</td><td>$[\mathrm{Co}{({\mathrm{NH}}_{3})}_{3}{({\mathrm{NO}}_{2})}_{3}]$</td><td>ii</td><td>Solvate isomerism</td></tr><tr><td>c</td><td>$[\mathrm{Cr}{({H}_{2}O)}_{6}]{\mathrm{Cl}}_{3}$</td><td>iii</td><td>Co-ordination isomerism</td></tr><tr><td>d</td><td>$cis-{[{\mathrm{CrCl}}_{2}(\mathrm{ox}{)}_{2}]}^{3-}$</td><td>iv</td><td>Optical isomerism</td></tr></tbody></table>Choose the correct answer from the options given below:

The INCORRECT statement regarding the structure of ${C}_{60}$ is :

The set in which compounds have different nature is:

Amongst the following, the linear species is:

Identify the elements $X$ and $Y$ using the ionization energy values given below : $\begin{matrix} & \mathrm{Ionization}\mathrm{energy} & (\mathrm{kJ}/\mathrm{mol}) \\ & {1}^{\mathrm{st}} & {2}^{\mathrm{nd}} \\ X & 495 & 4563 \\ Y & 731 & 1450\end{matrix}$

$\mathrm{AX}$ is a covalent diatomic molecule where $A$ and $X$ are second row elements of periodic table. Based on Molecular orbital theory, the bond order of $\mathrm{AX}$ is $2.5.$ The total number of electrons in $\mathrm{AX}$ is_____. (Round off to the Nearest Integer).