Inorganic Chemistry PYQ — Page 6

Given below are two statements : Statement I: Aluminium upon reaction with NaOH forms $[Al(OH)_6]^{3-}$ ion. Statement II: The geometry of $ICl_4^-$, $ClO_3^-$ and $IBr_2^-$ is square planar, pyramidal and linear respectively. In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements : Statement (I) : The correct sequence of bond lengths in the following species is : $O_2^+ < O_2 < O_2^- < O_2^{2-}$ Statement (II) : The correct sequence of number of unpaired electrons in the following species is : $O_2 > O_2^+ > O_2^- > O_2^{2-}$ In the light of the above statements, choose the correct answer from the options given below :

Match the LIST-I with LIST-II <table class="pyq-table"><tbody><tr><th>List-I Electronic configuration of tetrahedral metal ion</th><th>List-II Crystal Field Stabilization Energy ($\Delta_t$)</th></tr><tr><td>A. $d^2$</td><td>I. $-0.6$</td></tr><tr><td>B. $d^4$</td><td>II. $-0.8$</td></tr><tr><td>C. $d^6$</td><td>III. $-1.2$</td></tr><tr><td>D. $d^8$</td><td>IV. $-0.4$</td></tr></tbody></table> Choose the correct answer from the options given below:

The $1^{st}$ ionization enthalpy for Mg is $+737$ kJ/mol. The most probable estimated value of the $2^{nd}$ ionization enthalpy of Mg is ______.

A first row transition metal $(\mathrm{M})$ does not liberate $\mathrm{H}_{2}$ gas from dilute HCl.1 mol of aqueous solution of $\mathrm{MSO}_{4}$ is treated with excess of aqueous KCN and then $\mathrm{H}_{2} \mathrm{~S}(\mathrm{~g})$ is passed through the solution. The amount of MS (metal sulphide) formed from the above reaction is $\_\_\_\_$ mol.

Consider the following reactions $\mathrm{Na}_{2} \mathrm{~B}_{4} \mathrm{O}_{7} \xrightarrow{\Delta} 2 \mathrm{X}+\mathrm{Y}$ $\mathrm{CuSO}_{4}+\mathrm{Y} \xrightarrow{\text { Non-Luminous flame }} \mathrm{Z}+\mathrm{SO}_{3}$ $2 \mathrm{Z}+2 \mathrm{X}+$ Carbon $\xrightarrow{\text { Luminous flame }} 2 \mathrm{Q}+\mathrm{Na}_{2} \mathrm{~B}_{4} \mathrm{O}_{7}+\mathrm{CO}$ The oxidation states of Cu in Z and Q, respectively are :

Given below are two statements : Statement I: The number of pairs among $[Al_2O_3, Cr_2O_3]$, $[Cl_2O_7, Mn_2O_7]$, $[Na_2O, V_2O_3]$ and $[CO, N_2O]$ that contain oxides of same nature (acidic, basic, neutral or amphoteric) is $4$. Statement II: Among $Na_2O$, $Al_2O_3$, $CO$ and $Cl_2O_7$, the most basic and acidic oxides are $Na_2O$ and $Cl_2O_7$, respectively. In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements : Statement I : The number of species among $\mathrm{SF}_{4}, \mathrm{NH}_{4}^{+},\left[\mathrm{NiCl}_{4}\right]^{2-}, \mathrm{XeF}_{4},\left[\mathrm{PtCl}_{4}\right]^{2-}, \mathrm{SeF}_{4}$ and $\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}$, that have tetrahedral geometry is 3. Statement II : In the set [$\mathrm{NO}_{2}, \mathrm{BeH}_{2}, \mathrm{BF}_{3}, \mathrm{AlCl}_{3}$], all the molecules have incomplete octet around central atom. In the light of the above statements, choose the correct answer from the options given below :

The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is:

Consider ' $n$ ' is the number of lone pair of electrons present in the equatorial position of the most stable structure of $\mathrm{ClF}_3$. The ions from the following with ' $n$ ' number of unpaired electrons are A. $\mathrm{V}^{3+}$ B. $\mathrm{Ti}^{3+}$ C. $\mathrm{Cu}^{2+}$ D. $\mathrm{Ni}^{2+}$ E. $\mathrm{Ti}^{2+}$ Choose the correct answer from the options given below:

The incorrect statement among the following is options ${ }_1$.

The first transition series metal ' M ' has the highest enthalpy of atomisation in its series. One of its aquated ion $\left(\mathrm{M}^{\mathrm{n} \dagger}\right)$ exists in green colour. The nature of the oxide formed by the above $\mathrm{M}^{\mathrm{n}-}$ ion is :

From the magnetic behaviour of $\left[\mathrm{NiCl}_4\right]^{2-}$ (paramagnetic) and $\left[\mathrm{Ni}(\mathrm{CO})_4\right]$ (diamagnetic), choose the correct geometry and oxidation state.

A metal complex with a formula $\mathrm{MC} \ell_4 \cdot 3 \mathrm{NH}_3$ is involved in $\mathrm{sp}^3 \mathrm{~d}^2$ hybridisation. It upon reaction with excess of $\mathrm{AgNO}_3$ solution gives ' x ' moles of AgCl. Consider ' x ' is equal to the number of lone pairs of electron present in central atom of $\mathrm{BrF}_5$. Then the number of geometrical isomers exhibited by the complex is ______.

Given below are two statements : Statement (I) : The first ionization energy of Pb is greater than that of Sn . Statement (II) : The first ionization energy of Ge is greater than that of Si . In the light of the above statements, choose the correct answer from the options given below :

Which of the following electrolyte can be used to obtain $\mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_8$ by the process of electrolysis?

The type of hybridization and the magnetic property of $\left[\mathrm{MnCl}_6\right]^{3-}$ are :

The number of valence electrons present in the metal among $\mathrm{Cr}, \mathrm{Co}, \mathrm{Fe}$ and Ni which has the lowest enthalpy of atomisation is

The correct order of the complexes $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{3+}$ (A), $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ (B), $\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-}(\mathrm{C})$ and $\left[\mathrm{CoCl}\left(\mathrm{NH}_3\right)_5\right]^{2+}(\mathrm{D})$ in terms wavelength of light absorbed is :

A molecule with the formula \(\mathrm{AX}_4 \mathrm{Y}\) has all it's elements from p-block. Element A is rarest, monoatomic, non-radioactive from its group and has the lowest ionization enthalpy value among A, X and Y. Elements X and Y have first and second highest electronegativity values respectively among all the known elements. The shape of the molecule is :

Lanthanoid ions with $4 f^7$ configuration are : (A) $\mathrm{Eu}^{2+}$ (B) $\mathrm{Gd}^{3+}$ (C) $\mathrm{Eu}^{3+}$ (D) $\mathrm{Tb}^{3+}$ (E) $\mathrm{Sm}^{2+}$ Choose the correct answer from the options given below :

Match List-I with List-II  Choose the correct answer from the options given below :

In the given structure, number of sp and $\mathrm{sp}^2$ hybridized carbon atoms present respectively are : 

Which of the following electronegativity order is incorrect?