Inorganic Chemistry PYQ — Page 31

Match List-I with Match List-II <table class="pyq-table"><tbody><tr><td></td><td>List-I (Metal)</td><td></td><td>List-II (Application)</td></tr><tr><td>(A)</td><td>$\mathrm{Cs}$</td><td>(I)</td><td>High temperature thermometer</td></tr><tr><td>(B)</td><td>$\mathrm{Ga}$</td><td>(II)</td><td>Water repellent sprays</td></tr><tr><td>(C)</td><td>$B$</td><td>(III)</td><td>Photoelectric cells</td></tr><tr><td>(D)</td><td>$\mathrm{Si}$</td><td>(V)</td><td>Bullet proof vest</td></tr></tbody></table>Choose the most appropriate answer from the options given below

The number of non-ionisable protons present in the product $B$ obtained from the following reaction is___${C}_{2}{H}_{5}\mathrm{OH}+{\mathrm{PCl}}_{3}\rightarrow {C}_{2}{H}_{5}\mathrm{Cl}+A$ $A+{\mathrm{PCl}}_{3}\rightarrow B$

Which of the following $3d-\mathrm{metal}$ ion will give the lowest enthalpy of hydration $({\Delta }_{\mathrm{hyd}}H)$ when dissolved in water?

The correct order of melting points of hydrides of group $16$ elements is

On the surface of polar stratospheric clouds, hydrolysis of chlorine nitrate gives $A$ and $B$ while its reaction with $\mathrm{HCl}$ produces $B$ and $C$. $A.B$ and $C$ are, respectively

Given two statements below : Statement I : In ${\mathrm{Cl}}_{2}$ molecule the covalent radius is double of the atomic radius of chlorine. Statement II : Radius of anionic species is always greater than their parent atomic radius. Choose the most appropriate answer from options given below

Number of complexes which will exhibit synergic bonding amongst, $[\mathrm{Cr}{(\mathrm{CO})}_{6}],[\mathrm{Mn}{(\mathrm{CO})}_{5}]$ and $[{\mathrm{Mn}}_{2}{(\mathrm{CO})}_{10}]$ is

The oxoacid of phosphorus that is easily obtained from a reaction of alkali and white phosphorus and has two $P-H$ bonds, is

Reaction of ${[\mathrm{Co}{({H}_{2}O)}_{6}]}^{2+}$ with excess ammonia and in the presence of oxygen results into a diamagnetic product. Number of electrons present in ${t}_{2g}$-orbitals of the product is

Consider the ions/molecule ${O}_{2}^{+},{O}_{2},{O}_{2}^{-},{O}_{2}^{2-}$. For increasing bond order the correct option is

Which of the following pair of molecules contain odd electron molecule and an expanded octet molecule?

Outermost electronic configurations of four elements $A,B,C,D$ are given below: (A) $3{s}^{2}$ (B) $3{s}^{2}3{p}^{1}$ (C) $3{s}^{2}3{p}^{3}$ (D) $3{s}^{2}3{p}^{4}$ The correct order of first ionization enthalpy for them is

The number of statement(s) correct from the following for Copper is/are (A) $\mathrm{Cu}(\mathrm{II})$ complexes are always paramagnetic (B) $\mathrm{Cu}(I)$ complexes are generally colourless (C) $\mathrm{Cu}(I)$ is easily oxidized (D) In Fehling solution, the active reagent has $\mathrm{Cu}(I)$

The difference between spin only magnetic moment values of $[\mathrm{Co}{({H}_{2}O)}_{6}]{\mathrm{Cl}}_{2}$ and $[\mathrm{Cr}{({H}_{2}O)}_{6}]{\mathrm{Cl}}_{3}$ is

The spin only magnetic moment of the complex present in Fehling's reagent is____$B.M.$ (Round off your answer to the nearest integer)

The spin-only magnetic moment value of the compound with strongest oxidizing ability among ${\mathrm{MnF}}_{4},{\mathrm{MnF}}_{3}$ and ${\mathrm{MnF}}_{2}$ is_____ $B.M$ (nearest integer)

Number of lone pairs of electrons in the central atom of ${\mathrm{SCl}}_{2},{O}_{3},{\mathrm{ClF}}_{3}$ and ${\mathrm{SF}}_{6}$, respectively, are

Given below are two statements : One is labelled as Assertion $A$ and the other is labelled as Reason $R$ Assertion $A$ : Zero orbital overlap is an out of phase overlap. Reason $R$ : It results due to different orientation/ direction of approach of orbitals. In the light of the above statements. Choose the correct answer from the options given below

When borax is heated with $\mathrm{CoO}$ on a platinum loop, blue coloured bead formed is largely due to

In neutral or alkaline solution, ${\mathrm{MnO}}_{4}^{-}$ oxidises thiosulphate to

The first ionization enthalpies of $\mathrm{Be},B,N$ and $O$ follow the order

In the flame test of a mixture of salts, a green flame with blue centre was observed. Which one of the following cations may be present?

Arrange the following in the decreasing order of their covalent character : (A) $\mathrm{LiCl}$ (B) $\mathrm{NaCl}$ (C) $\mathrm{KCl}$ (D) $\mathrm{CsCl}$ Choose the most appropriate answer from the options given below

The spin-only magnetic moment value of an octahedral complex among ${\mathrm{CoCl}}_{3}\cdot 4{\mathrm{NH}}_{3}$, ${\mathrm{NiCl}}_{2}\cdot 6{H}_{2}O$ and ${\mathrm{PtCl}}_{4}\cdot 2\mathrm{HCl}$, which upon reaction with excess of ${\mathrm{AgNO}}_{3}$ gives $2$ moles of $\mathrm{AgCl}$ is_____B.M. (Nearest Integer)