Inorganic Chemistry PYQ — Page 24

The number of molecules or ions from the following, which do not have odd number of electrons are _____ . (A) ${\mathrm{NO}}_{2}$ (B) ${\mathrm{ICl}}_{4}^{-}$ (C) ${\mathrm{BrF}}_{3}$ (D) ${\mathrm{ClO}}_{2}$ (E) ${\mathrm{NO}}_{2}^{+}$ (F) $\mathrm{NO}$

The magnetic moment of a transition metal compound has been calculated to be $3.87\mathrm{BM}$. The metal ion is

Which of the Phosphorus oxoacid can create silver mirror from ${\mathrm{AgNO}}_{3}$ solution?

The pair of lanthanides in which both elements have high third-ionization energy is:

Number of ambidentate ligands in a representative metal complex $[M(\mathrm{en})(\mathrm{SCN}{)}_{4}]$ is $_________.$ [$\mathrm{en}=$ethylenediamine]

Given below are two statements : One is labelled as $\mathrm{Assertion}A$ and the other is labelled as $\mathrm{Reason}R$. $\mathrm{Assertion}A:$ Butan–$1$–ol has higher boiling point than ethoxyethane. $\mathrm{Reason}R:$ Extensive hydrogen bonding leads to stronger association of molecules. In the light of the above statements, choose the correct answer from the options given below :

Potassium dichromate acts as a strong oxidizing agent in acidic solution. During this process, the oxidation state changes from

Better method for preparation of ${\mathrm{BeF}}_{2}$, among the following is

Statement I:- Dipole moment is a vector quantity and by convention it is depicted by a small arrow with tail on the negative centre and head pointing towards the positive centre. Statement II:- The crossed arrow of the dipole moment symbolizes the direction of the shift of charges in the molecules. In the light of the above statements, choose the most appropriate answer from the options given below:-

What is the number of unpaired electron(s) in the highest occupied molecular orbital of the following species : ${N}_{2},N{}_{2}^{+},{O}_{2},{O}_{2}^{+}$ ?

Given below are two statements: one is labelled as “Assertion A” and the other is labelled as “Reason R” Assertion A : In the complex $\mathrm{Ni}(\mathrm{CO}{)}_{4}$ and $\mathrm{Fe}(\mathrm{CO}{)}_{5}$, the metals have zero oxidation state. Reason R : Low oxidation states are found when a complex has ligands capable of $\pi$-donor character in addition to the $\sigma$-bonding. In the light of the above statements, choose the most appropriate answer from the options given below

The complex with highest magnitude of crystal field splitting energy $({\Delta }_{0})$ is

For compound having the formula ${\mathrm{GaAlCl}}_{4}$, the correct option from the following is

A chloride salt solution acidified with dil. ${\mathrm{HNO}}_{3}$ gives a curdy white precipitate, $[A]$, on addition of ${\mathrm{AgNO}}_{3}$. [A] on treatment with ${\mathrm{NH}}_{4}\mathrm{OH}$ gives a clear solution, B.

In Chromyl chloride, the oxidation state of chromium is $(+)$ ___________.

How many of the following metal ions have similar value of spin only magnetic moment in gaseous state? ________ (Given: Atomic number$:V,23;\mathrm{Cr},24;\mathrm{Fe},26;\mathrm{Ni},28)$ ${V}^{3+},{\mathrm{Cr}}^{3+},{\mathrm{Fe}}^{2+},{\mathrm{Ni}}^{3+}$

If the formula of Borax is ${\mathrm{Na}}_{2}{B}_{4}{O}_{x}(\mathrm{OH}{)}_{y}\cdot {\mathrm{zH}}_{2}O$, then $x+y+z=______$

Given below are two statements : Statement I : ${\mathrm{SO}}_{2}$ and ${H}_{2}O$ both possess V-shaped structure Statement II : The bond angle of ${\mathrm{SO}}_{2}$ is less than that of ${H}_{2}O$. In the light of the above statements, choose the most appropriate answer from the options given below:

The ratio of spin-only magnetic moment values ${\mu }_{\mathrm{eff}}{[\mathrm{Cr}(\mathrm{CN}{)}_{6}]}^{3-}/{\mu }_{\mathrm{eff}}{[\mathrm{Cr}({H}_{2}O)6]}^{3+}$ is _______

The octahedral diamagnetic low spin complex among the following is

In ammonium$-$phosphomolybdate, the oxidation state of $\mathrm{Mo}$ is $+_______$

Which one amongst the following are good oxidising agents? (a) ${\mathrm{Sm}}^{2+}$ (b) ${\mathrm{Ce}}^{2+}$ (c) ${\mathrm{Ce}}^{4+}$ (d) ${\mathrm{Tb}}^{4+}$ Choose the most appropriate answer from the options given below :

A solution of ${\mathrm{CrO}}_{5}$ in amyl alcohol has a....colour

Which of the following complex is octahedral, diamagnetic and the most stable?