Inorganic Chemistry PYQ — Page 16

Match List I with List II \(\begin{array}{|l|l|l|l|} \hline & \text{List - I} & & \text{List - II} \\ & \text{(Compound/Species)} & & \text{(Shape/Geometry)} \\ \hline \text { A. } & \mathrm{SF}_4 & \text { I. } & \text { Tetrahedral } \\ \hline \text { B. } & \mathrm{BrF}_3 & \text { II. } & \text { Pyramidal } \\ \hline \text { C. } & \mathrm{BrO}_3^{-} & \text {III. } & \text { See saw } \\ \hline \text { D. } & \mathrm{NH}_4^{+}{ }^{+} \mathrm{KS} & \text { IV. } & \text { Bent T-Shape } \\ \hline \end{array}\) Choose the correct answer from the options given below:

Given below are two statements: Statement - I: Along the period, the chemical reactivity of the element gradually increases from group $1$ to group $18$ . Statement - II: The nature of oxides formed by group $1$ element is basic while that of group $17$ elements is acidic. In the the light above statements, choose the most appropriate from the questions given below:

Match List - I with List-II <table class="pyq-table"><tbody><tr><td></td><td>List I (Molecule)</td><td></td><td>List II (Shape)</td></tr><tr><td>A.</td><td>${\mathrm{BrF}}_{5}$</td><td>i.</td><td>T-shape</td></tr><tr><td>B.</td><td>${H}_{2}O$</td><td>ii.</td><td>See saw</td></tr><tr><td>C.</td><td>${\mathrm{ClF}}_{3}$</td><td>iii.</td><td>Bent</td></tr><tr><td>D.</td><td>${\mathrm{SF}}_{4}$</td><td>iv.</td><td>Square pyramidal</td></tr></tbody></table>

Given below are two statements : Statement I : The metallic radius of \(\mathrm{Na}\) is \(1.86 \mathrm{~A}^{\circ}\) and the ionic radius of \(\mathrm{Na}^{+}\)is lesser than \(1.86 \mathrm{~A}^{\circ}\). Statement II : Ions are always smaller in size than the corresponding elements. In the light of the above statements, choose the correct answer from the options given below :

Given below are two statements : Statement I : The electronegativity of group $14$ elements from $\mathrm{Si}$ to $\mathrm{Pb}$ gradually decreases. Statement II : Group $14$ contains non-metallic, metallic, as well as metalloid elements. In the light of the above statements, choose the most appropriate from the options given below :

The strongest reducing agent amont the following is:

From the given list, the number of compounds with $+4$oxidation state of Sulphur ${\mathrm{SO}}_{3},{H}_{2}{\mathrm{SO}}_{3},{\mathrm{SOCl}}_{2},{\mathrm{SF}}_{4},{\mathrm{BaSO}}_{4},{H}_{2}{S}_{2}{O}_{7}$

lectronic configuration of \(\mathrm{Cu}(\mathrm{II})\) is \(3 \mathrm{~d}^9\) whereas that of \(\mathrm{Cu}(\mathrm{I})\) is \(3 \mathrm{~d}^{10}\). Which of the following is correct?

The 'spin only' magnetic moment value of \(\mathrm{MO}_4{ }^{2-}\) is _______ BM. (Where M is a metal having least metallic radii. among \(\mathrm{Sc}, \mathrm{Ti}, \mathrm{V}, \mathrm{Cr}, \mathrm{Mn}\) and \(\mathrm{Zn}\) ). (Given atomic number: \(\mathrm{Sc}=21, \mathrm{Ti}=22, \mathrm{~V}=23, \mathrm{Cr}=24, \mathrm{Mn}=25\) and \(\mathrm{Zn}=30\))

Among \(\mathrm{CrO}, \mathrm{Cr}_2 \mathrm{O}_3\) and \(\mathrm{CrO}_3\), the sum of spin-only magnetic moment values of basic and amphoteric oxides is _______ \(10^{-2} \mathrm{BM}\) (nearest integer). (Given atomic number of \(\mathrm{Cr}\) is 24)

A first row transition metal with highest enthalpy of atomisation, upon reaction with oxygen at high temperature forms oxides of formula \(\mathrm{M}_2 \mathrm{O}_{\mathrm{n}}\) (where \(\mathrm{n}=3,4\), 5). The 'spin-only' magnetic moment value of the amphoteric oxide from the above oxides is ______ \(\mathrm{BM}\) (near integer) (Given atomic number: \(\mathrm{Sc}: 21, \mathrm{Ti}: 22, \mathrm{~V}: 23, \mathrm{Cr}: 24, \mathrm{Mn}: 25, \mathrm{Fe}: 26, \mathrm{Co}: 27\), \(\mathrm{Ni}: 28, \mathrm{Cu}: 29, \mathrm{Zn}: 30\))

A first row transition metal in its +2 oxidation state has a spin-only magnetic moment value of \(3.86 \mathrm{BM}\). The atomic number of the metal is

Which of the following compounds show colour due to $d-d$ transition?

Identify correct statements from below: A. The chromate ion is square planar. B. Dichromates are generally prepared from chromates. C. The green manganate ion is diamagnetic. D. Dark green coloured ${K}_{2}{\mathrm{MnO}}_{4}$ disproportionates in a neutral or acidic medium to give permanganate. E. With increasing oxidation number of transition metal, ionic character of the oxides decreases. Choose the correct answer from the options given below:

$A$ and $B$ formed in the following reactions are: ${\mathrm{CrO}}_{2}{\mathrm{Cl}}_{2}+4\mathrm{NaOH}\rightarrow A+2\mathrm{NaCl}+2{H}_{2}O$ $A+2\mathrm{HCl}+2{H}_{2}{O}_{2}\rightarrow B+3{H}_{2}O$

Match List-I with List-II <table class="pyq-table"><tbody><tr><td></td><td>List I (Species)</td><td></td><td>List II (Electronic distribution)</td></tr><tr><td>A.</td><td>${\mathrm{Cr}}^{+2}$</td><td>i.</td><td>$3{d}^{8}$</td></tr><tr><td>B.</td><td>${\mathrm{Mn}}^{+}$</td><td>ii.</td><td>$3{d}^{3}4{s}^{1}$</td></tr><tr><td>C.</td><td>${\mathrm{Ni}}^{+2}$</td><td>iii.</td><td>.$3{d}^{4}$</td></tr><tr><td>D.</td><td>${V}^{+}$</td><td>iv.</td><td>$3{d}^{5}4{s}^{1}$</td></tr></tbody></table>Choose the correct answer from the options given below:

In alkaline medium. ${\mathrm{MnO}}_{4}^{-}$ oxidises ${I}^{-}$ to

Given below are two statements : Statement (I) : The 4f and 5f - series of elements are placed separately in the Periodic table to preserve the principle of classification. Statement (II) : s-block elements can be found in pure form in nature. In light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements : Statement (I) : Both metal and non-metal exist in $\mathrm{p}$ and d-block elements. Statement (II) : Non-metals have higher ionisation enthalpy and higher electronegativity than the metals. In the light of the above statements, choose the most appropriate answer from the option given below:

Total number of electrons present in \(\left(\pi^*\right)\) molecular orbitals of \(\mathrm{O}_2, \mathrm{O}_2{ }^{+}\) and \(\mathrm{O}_2^{-}\) is _______.

Given below are two statements: Statement (I) : ${\mathrm{SiO}}_{2}$ and ${\mathrm{GeO}}_{2}$ are acidic while $\mathrm{SnO}$ and $\mathrm{PbO}$ are amphoteric in nature. Statement (II) : Allotropic forms of carbon are due to property of catenation and $p\pi -d\pi$ bond formation. In the light of the above statements, choose the most appropriate answer from the options given below:

Arrange the bonds in order of increasing ionic character in the molecules. $\mathrm{LiF},{K}_{2}O,{N}_{2},{\mathrm{SO}}_{2}$ and ${\mathrm{ClF}}_{3}.$

Oxidation state of Fe(Iron) in complex formed in Brown ring test.

Given below are two statements : one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$. Assertion (A) : Melting point of Boron $(2453K)$ is unusually high in group $13$ elements. Reason (R) : Solid Boron has very strong crystalline lattice. In the light of the above statements, choose the most appropriate answer from the options given below ;