JEE Main 2019 — Inorganic Chemistry

Among the following molecules/ ions, ${C}_{2}^{2-}, {N}_{2}^{2-},{O}_{2}^{2-}, {O}_{2}$ Which one is diamagnetic and has the shortest bond length?

Among the following reactions of hydrogen with halogens, the one that requires a catalyst is:

Among the following species, the diamagnetic molecule is:

Among the following, the molecule expected to be stabilized by anion formation is: ${C}_{2}, {O}_{2}, NO, {F}_{2}$

${C}_{60},$ an allotrope of carbon contains

An organic compound ‘A’ is oxidized with $N{a}_{2}{O}_{2}$ followed by boiling with $HN{O}_{3}.$ The resultant solution is then treated with ammonium molybdate to yield a yellow percipitate. Based on a above observation, the element present in the given compound is:

Chlorine on reaction with hot and concentrated sodium hydroxide gives.

Complete removal of both the axial ligands (along the $z-axis$ ) from an octahedral complex leads to which of the following splitting patterns? (relative orbital energies not on scale).

Consider the hydrated ions of $T{i}^{2+}, {V}^{2+}, T{i}^{3+}$ and $S{c}^{3+}$ . The correct order of their spin-only magnetic moments is:

Correct statements among regarding silicones are: $(a)$ They are polymers with hydrophobic character. $(b)$ They are biocompatible. $(c)$ In general, they have high thermal stability and low dielectric strength. $(d)$ Usually, they are resistant to oxidation and used as greases.

Diborane $({B}_{2}{H}_{6})$ reacts independently with ${O}_{2}$ and ${H}_{2}O$ to produce, respectively:

During the change of ${O}_{2}$ to ${O}_{2}^{-}$ , the incoming electron goes to the orbital:

Good reducing nature of ${H}_{3}P{O}_{2}$ is attributed to the presence of:

$HF$ has highest boiling point among hydrogen halides, because it has:

Homoleptic octahedral complexes of a metal ion $'{M}^{3+}'$ with three monodentate ligands ${L}_{1},{L}_{2}and {L}_{3}$ absorb wavelengths in the region of green, blue and red respectively. The increasing order of the ligand strength is:

In comparison to boron, berylium has:

In general, the properties that decrease and increase down a group in the periodic table, respectively, are :

$\quad \mathrm{A} \stackrel{4 \mathrm{KOH}, \mathrm{O}_{2}}{\longrightarrow} \underset{(\mathrm{Green})}{2 \mathrm{~B}}+2 \mathrm{H}_{2} \mathrm{O}$ $\mathrm{B} \stackrel{4 \mathrm{HCl}}{\longrightarrow} \underset{(\text { Purple })}{2 \mathrm{C}}+\mathrm{MnO}_{2}+2 \mathrm{H}_{2} \mathrm{O}$ $2 \mathrm{C} \stackrel{\mathrm{H}_{2} \mathrm{O}, \mathrm{KI}}{\longrightarrow} 2 \mathrm{~A}+\mathrm{KOH}+\mathrm{D}$ In the above sequence of reactions, A and D, respectively, are:

In which of the following processes, the bond order has increased and paramagnetic character has changed to diamagnetic?

Iodine reacts with concentrated $HN{O}_{3}$ to yield $Y$ along with other products. The oxidation state of iodine in $Y$ , is:

$M{n}_{2}{(CO)}_{10}$ is an organometallic compound due to the presence of:

Match the catalysts (Column $I$) with products (Column $\mathrm{II}$)<table class="pyq-table"><tbody><tr><th></th><th>Column I</th><th></th><th>Column II</th></tr><tr><td></td><td>Catalyst</td><td></td><td>Product</td></tr><tr><td>A.</td><td>${V}_{2}{O}_{5}$</td><td>P.</td><td>Polyethylene</td></tr><tr><td>B.</td><td>$TiC{l}_{4}/Al{(Me)}_{3}$</td><td>Q.</td><td>Ethanal</td></tr><tr><td>C.</td><td>$PdC{l}_{2}$</td><td>R.</td><td>${H}_{2}S{O}_{4}$</td></tr><tr><td>D.</td><td>Iron Oxide</td><td>S.</td><td>$N{H}_{3}$</td></tr></tbody></table>

Sodium metal on dissolution in liquid ammonia gives a deep blue solution due to the formation of:

The amorphous form of silica is:

The basic structural unit of feldspar, zeolites mica, and asbestos is:

The $C-C$ bond length is maximum in:

The calculated spin-only magnetic moments $(BM)$ of the anionic and cationic species of ${ [ \text{Fe}{ ( {\text{H}}_{2} \text{O})}_{6} ]}^{ +2}$ and ${[\text{Fe }{(\text{CN})}_{6}]}^{4-}$ respectively, are:

The chloride that CANNOT get hydrolysed is:

The complex ion that will lose its crystal field stabilization energy upon oxidation of metal to $+3$ state is: 

The complex that has highest crystal field splitting energy $(\Delta )$ , is:

The compound that inhibits the growth of tumors is:

The compound used in the treatment of lead poisoning is:

The coordination number of Th in $\mathrm{K}_{4}\left[\mathrm{Th}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{4}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}\right]$ is: $\left(\mathrm{C}_{2} \mathrm{O}_{4}^{2-}=\right.$ oxalato $)$

The coordination numbers of $Co$ and $Al$ in $[Co(Cl){(en)}_{2}]Cl$ and ${K}_{3}[Al{({C}_{2}{O}_{4})}_{3}],$ respectively are: (en $=$ ethane-1, 2-diamine)

The correct option with respect to the Pauling electronegativity values of the elements is:

The correct order of atomic radii is:

The correct order of catenation is:

The correct order of the atomic radii of $\mathrm{C}, \mathrm{Cs}, \mathrm{Al},$ and $\mathrm{S}$ is:

The correct order of the first ionization enthalpies is:

The correct order of the oxidation states of nitrogen in $NO, {N}_{2}O, N{O}_{2}$ and ${N}_{2}{O}_{3}$ is

The correct order of the spin –only magnetic moment of metal ions in the following low-spin complexes, ${[V{(CN)}_{6}]}^{4-},{[Fe{(CN)}_{6}]}^{4-},{[Ru{(N{H}_{3})}_{6}]}^{3+}$ and ${[Cr{(N{H}_{3})}_{6}]}^{2+},$ is:

The correct statement about $I{\mathrm{Cl}}_{5}$ and $I{\mathrm{Cl}}_{4}^{-}$ is:

The correct statement among the following is:

The correct statements among I to III are: (I) Valence bond theory cannot explain the color exhibited by transition metal complexes. (II) Valence bond theory can predict quantitatively the magnetic properties of transition metal complexes. (III) Valence bond theory cannot distinguish ligands as weak and strong field ones.

The correct statements among I to III regrading group 13 element oxides are, (I) Boron trioxide is acidic. (II) Oxides of aluminum and gallium are amphoteric. (III) Oxides of indium and thallium are basic.

The crystal field stabilization energy (CFSE) of $[Fe{({H}_{2}O)}_{6}]C{l}_{2}$ and ${K}_{2}[NiC{l}_{4}]$, respectively, are:

The degenerate orbitals of ${[Cr{({H}_{2}O)}_{6}]}^{3+}$ are

The difference in the number of unpaired electrons of a metal ion in its high-spin and low-spin octahedral complexes is two. The metal ion is:

The effect of lanthanoid contraction in the lanthanoid series of elements by and large means

The element having the greatest difference between its first and second ionization energies, is

The element that does not show catenation is

The element that shows greater ability to form $p\pi -p\pi$ multiple bonds is:

The element that usually does NOT show variable oxidation states is:

The element with $Z=120$ (not yet discovered) will be a/an

The following ligand is: 

The group number, number of valence electrons, and valency of an element with atomic number $15,$ respectively, are:

The highest possible oxidation states of uranium and plutonium, respectively, are

The hydride that is NOT electron deficient is:

The incorrect statement is.

The ion that has ${sp}^{3}{d}^{2}$ hybridization for the central atom is:

The IUPAC symbol for the element with atomic number $119$ would be:

The lanthanide ion that would show colour is:

The magnetic moment of an octahedral homoleptic $\mathrm{Mn}(\mathrm{II})$ complex is $5.9 B.M.$ . The suitable ligand for this complex is:

The major product of the following reaction is, 

The maximum number of possible oxidation states of actinoids are shown by:

The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, respectively, are: 

The metal that gives hydrogen gas upon treatment with both the acid as well as the base is

The metal's $d-$ orbitals that are directly facing the ligands in ${K}_{3}[Co{(CN)}_{6}]$ are:

The number of $2$-centre-$2$-electron and $3$-centre-$2$-electron bonds in ${B}_{2}{H}_{6}$, respectively, are:

The number of bridging CO ligand(s) and Co-Co bond(s) in $\mathrm{Co}_{2}(\mathrm{CO})_{8},$ respectively are:

The number of pentagons in ${C}_{60}$ and trigons (triangles) in white phosphorus, are;

The number of water molecules not coordinated to copper ion directly in $CuS{O}_{4}\cdot 5{H}_{2}O,$ is

The one that will show optical activity is ($\mathrm{en}=$ethane$-1,2-$diamine)

The oxoacid of sulphur that does not contain bond between sulphur atom is:

The pair of metal ions that can give a spin only magnetic moment of $3.9 BM$ for the complex $[M{({H}_{2}O)}_{6}]C{l}_{2}$ , is:

The pair that contains two $P-H$ bonds in each of the oxoacids is:

The pair that has similar atomic radii is:

The relative stability of +1 oxidation state of group 13 elements follows the order

The size of the iso-electronic species $C{l}^{-}$ , Ar and $C{a}^{2+}$ is affected by:

The species that can have a trans-isomer is: $(en = ethane-1, 2-diamine, ox=oxalate)$

The statement that is INCORRECT about the interstitial compounds is:

The total number of isomers for a square planar complex: $[\mathrm{MCl}(F)({\mathrm{NO}}_{2})(\mathrm{SCN})]$ is:

The transition elements that has the lowest enthalpy of atomisation is:

The type of hybridization and no. of lone pair(s) of electron of $Xe$ in $XeO{F}_{4}$ , respectively, are:

Thermal decomposition of a Mn compound $(X)$ at $513 K$ results in compound $Y,$ $Mn{O}_{2}$ and a gaseous product. $Mn{O}_{2}$ reacts with $NaCl$ and concentrated ${H}_{2}S{O}_{4}$ to give a pungent gas$Z$ . $X, Y$ and $Z,$ respectively, are:

Three complexes, ${[CoCl{(N{H}_{3})}_{5}]}^{2+}(I), {[Co{(N{H}_{3})}_{5}{H}_{2}O]}^{3+}(II)$ and ${[Co{(N{H}_{3})}_{6}]}^{3+}(III)$ absorb light in the visible region. The correct order of the wavelength of light absorbed by them is:

Two complexes $[\mathrm{Cr}{({H}_{2}O)}_{6 }]{\mathrm{Cl}}_{3} (A)$ and $[\mathrm{Cr}{({\mathrm{NH}}_{3})}_{6}]{\mathrm{Cl}}_{3}(B)$ are violet and yellow coloured, respectively, The incorrect statement regarding them is:

Two pi and half sigma bonds are present in:

When the first electron gain enthalpy $( \Delta {H}_{ eg} )$ of oxygen is $-141 kJ/mol$ , its second electron gain enthalpy is:

Wilkinson catalyst is