JEE Main Chemistry — Inorganic Chemistry previous year questions with solutions.
In general, the properties that decrease and increase down a group in the periodic table, respectively, are :
The number of bridging CO ligand(s) and Co-Co bond(s) in $\mathrm{Co}_{2}(\mathrm{CO})_{8},$ respectively are:
The degenerate orbitals of ${[Cr{({H}_{2}O)}_{6}]}^{3+}$ are
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>
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 one that will show optical activity is ($\mathrm{en}=$ethane$-1,2-$diamine)
The compound that inhibits the growth of tumors is:
The correct order of the first ionization enthalpies is:
The total number of isomers for a square planar complex: $[\mathrm{MCl}(F)({\mathrm{NO}}_{2})(\mathrm{SCN})]$ is:
The IUPAC symbol for the element with atomic number $119$ would be:
The number of $2$-centre-$2$-electron and $3$-centre-$2$-electron bonds in ${B}_{2}{H}_{6}$, respectively, are:
The complex ion that will lose its crystal field stabilization energy upon oxidation of metal to $+3$ state is: 
The $C-C$ bond length is maximum in:
According to molecular orbital theory, which of the following is true with respect to ${\mathrm{Li}}_{2}^{+}$ and ${\mathrm{Li}}_{2}^{-}$ ?
A reaction of cobalt $(\mathrm{III})$ chloride and ethylenediamine in a $1:2$ mole ratio generates two isomeric products $A$ (violet-coloured) and $B$ (green-coloured). $A$ can show optical activity, but, $B$ is optically inactive. What type of isomers do $A$ and $B$ represent?
The major product of the following reaction is, 
Among the following reactions of hydrogen with halogens, the one that requires a catalyst is:
The correct order of catenation is:
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.
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:
The effect of lanthanoid contraction in the lanthanoid series of elements by and large means
The element that does not show catenation 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:
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).