Inorganic Chemistry PYQ — Page 26

Which one of the following pairs is an example of polar molecular solids?

The number of electrons involved in the reduction of permanganate to manganese dioxide in acidic medium is _____ .

$1L,0.02M$ solution of $[\mathrm{Co}{({\mathrm{NH}}_{3})}_{5}{\mathrm{SO}}_{4}]\mathrm{Br}$ is mixed with $1L,0.02M$ solution of $[\mathrm{Co}{({\mathrm{NH}}_{3})}_{5}\mathrm{Br}]{\mathrm{SO}}_{4}$. The resulting solution is divided into two equal parts $(X)$ and treated with excess ${\mathrm{AgNO}}_{3}$ solution and ${\mathrm{BaCl}}_{2}$ solution respectively as shown below: $1L$ Solution $(X)+{\mathrm{AgNO}}_{3}$ solution (excess) $\rightarrow Y$ $1L$ Solution $(X)+{\mathrm{BaCl}}_{2}$ solution (excess) $\rightarrow Z$ The number of moles of $Y$ and $Z$ respectively are

Among the following compounds, the one which shows highest dipole moment is

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) $\mathrm{NO}$

Element not present in Nessler’s reagent is

Given below are two statements: Statement I: Chlorine can easily combine with oxygen to from oxides: and the product has a tendency to explode. Statement II: Chemical reactivity of an element can be determined by its reaction with oxygen and halogens. In the light of the above statements, choose the correct answer from the options given below

Match List I with List II <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">List I Oxide</td><td colspan="2" rowspan="1">List II Type of bond</td></tr><tr><td>$A$</td><td>${N}_{2}{O}_{4}$</td><td>$I$</td><td>$1N=O\mathrm{bond}$</td></tr><tr><td>$B$</td><td>${\mathrm{NO}}_{2}$</td><td>$\mathrm{II}$</td><td>$1N–O–N\mathrm{bond}$</td></tr><tr><td>$C$</td><td>${N}_{2}{O}_{5}$</td><td>$\mathrm{III}$</td><td>$1N–N\mathrm{bond}$</td></tr><tr><td>$D$</td><td>${N}_{2}O$</td><td>$\mathrm{IV}$</td><td>$1N=N/N\equiv N\mathrm{bond}$</td></tr></tbody></table>Choose the correct answer from the options given below :

Highest oxidation state of $\mathrm{Mn}$ is exhibited in ${\mathrm{Mn}}_{2}{O}_{7}$. The correct statements about ${\mathrm{Mn}}_{2}{O}_{7}$ are (A) $\mathrm{Mn}$ is tetrahedrally surrounded by oxygen atoms (B) $\mathrm{Mn}$ is octahedrally surrounded by oxygen atoms (C) Contains $\mathrm{Mn}-O-\mathrm{Mn}$ bridge (D) Contains $\mathrm{Mn}-\mathrm{Mn}$ bond. Choose the correct answer from the options given below

Match List I with List II <table class="pyq-table"><tbody><tr><td></td><td>List I Coordination entity</td><td></td><td>List II Wavelength of light absorbed in nm</td></tr><tr><td>A</td><td>${[\mathrm{CoCl}{({\mathrm{NH}}_{3})}_{5}]}^{2+}$</td><td>I.</td><td>$310$</td></tr><tr><td>B</td><td>${[\mathrm{Co}{({\mathrm{NH}}_{3})}_{6}]}^{3+}$</td><td>II.</td><td>$475$</td></tr><tr><td>C</td><td>${[\mathrm{Co}(\mathrm{CN}{)}_{6}]}^{3-}$</td><td>III.</td><td>$535$</td></tr><tr><td>D</td><td>${[\mathrm{Cu}{({H}_{2}O)}_{4}]}^{2+}$</td><td>IV.</td><td>$600$</td></tr></tbody></table>Choose the correct answer from the options given below :-

Boric acid in solid, whereas ${\mathrm{BF}}_{3}$ is gas at room temperature because of

Consider the following statement (A) ${\mathrm{NF}}_{3}$ molecules has a trigonal planar structure. (B) Bond Length of ${N}_{2}$ is shorter than ${O}_{2}$. (C) Isoelectronic molecules or ions have identical bond order. (D) Dipole moment of ${H}_{2}S$ is higher than that of water molecule. Choose the correct answer from the options given below:

To inhibit the growth of tumours, identify the compounds used from the following: (A) EDTA (B) Coordination Compounds of $\mathrm{Pt}$ (C) D-Penicillamine (D) Cis - Platin Choose the correct answer from the option given below:

${\mathrm{XeF}}_{4}$ reacts with ${\mathrm{SbF}}_{5}$ to form ${[{\mathrm{XeF}}_{m}]}^{n+}{[{\mathrm{SbF}}_{y}]}^{2-}m+n+y+z=?$.

Given below are two statements: Statement I : Nickel is being used as the catalyst for producing syn gas and edible fats. Statement II : Silicon forms both electron rich and electron deficient hydrides. In the light of the above statements, choose the most appropriate answer from the options given below:

For a good quality cement, the ratio of silica to alumina is found to be

The homoleptic and octahedral complex of ${\mathrm{Co}}^{2+}$ and ${H}_{2}O$ has ______ unpaired electron(s) in the ${t}_{2g}$ set of orbitals.

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

Given below are two statements : Statement I : Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green. Statement II : The green colour observed is due to the formation of copper(I) metaborate In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements, one is labelled as Assertion $A$ and the other is labelled as Reasom $R$. Assertion $A$: A solution of the product obtained by heating a mole of glycine with a mole of chlorine in presence of red phosphorous generates chiral carbon atom. Reason $R$: A molecule with $2$ chiral carbons is always optically active. In the light of above statements, chose the correct answer from the options given below:

In the wet tests for identification of various cations by precipitation, which transition element cation doesn't belong to group IV in qualitative inorganic analysis?

Total number of moles of AgCl precipitated on addition of excess of ${\mathrm{AgNO}}_{3}$ to one mole each of the following complexes $[\mathrm{Co}{({\mathrm{NH}}_{3})}_{4}{\mathrm{Cl}}_{2}]\mathrm{Cl}$, $[\mathrm{Ni}{({H}_{2}O)}_{6}]{\mathrm{Cl}}_{2},[\mathrm{Pt}{({\mathrm{NH}}_{3})}_{2}{\mathrm{Cl}}_{2}]$ and $[\mathrm{Pd}{({\mathrm{NH}}_{3})}_{4}]{\mathrm{Cl}}_{2}$ is

Match List I with List II <table class="pyq-table"><tbody><tr><td>List I</td><td>List II</td></tr><tr><td>A. ${\mathrm{XeF}}_{4}$</td><td>I.See-saw</td></tr><tr><td>B. ${\mathrm{SF}}_{4}$</td><td>II. Square planar</td></tr><tr><td>C. ${\mathrm{NH}}_{4}^{+}$</td><td>III. Bent $T-$ shaped</td></tr><tr><td>D.${\mathrm{BrF}}_{3}$</td><td>IV. Tetrahedral</td></tr></tbody></table>Choose the correct answer from the options given below :

${\mathrm{KMnO}}_{4}$ oxidises ${I}^{-}$ in acidic and neutral/faintly alkaline solution, respectively to