JEE Main Chemistry — Inorganic Chemistry previous year questions with solutions.
Match Lis-I with List-II. <table class="pyq-table"><tbody><tr><td></td><td>List-1</td><td></td><td>List-II</td></tr><tr><td>A.</td><td>Weak intermolecular forces of attraction</td><td>I.</td><td>Hexamethylenediamine + adipic acid</td></tr><tr><td>B.</td><td>Hydrogen bonding</td><td>II.</td><td>${\mathrm{AlEt}}_{3}+{\mathrm{TiCl}}_{4}$</td></tr><tr><td>C.</td><td>Heavily branched polymer</td><td>III.</td><td>$2-\mathrm{chloro}-1,3-\mathrm{butadiene}$</td></tr><tr><td>D.</td><td>High density polymer</td><td>IV.</td><td>$\mathrm{Phenol}+\mathrm{formaldehyde}$</td></tr></tbody></table>Choose the correct answer from the options given below
Given below are two statements, one is labelled as assertion $A$ and the other is labelled as Reason $R$. assertion $A$ : ${[\mathrm{CoCl}{({\mathrm{NH}}_{3})}_{5}]}^{2+}$ absorbs at lower wavelength of light with respect to ${[\mathrm{Co}{({\mathrm{NH}}_{3})}_{5}({H}_{2}O)]}^{3+}$ Reason $R$: It is because the wavelenght of light absorbed depends on the oxidation state of the metal ion. In the light of the above statements,choose the correct answer from the options given below:
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 :
Which of the following complexes will exhibit maximum attraction to an applied magnetic field?
The difference in oxidation state of chromium in chromate and dichromate salts is___
Spin only magnetic moment of ${[{\mathrm{MnBr}}_{6}]}^{4-}$ is _____ B.M. (round off to the closest integer)
Given below are two statements . Statement $I$ : In ${\mathrm{CuSO}}_{4}\cdot 5{H}_{2}O,\mathrm{Cu}-O$ bonds are present. Statement $\mathrm{II}$ : In ${\mathrm{CuSO}}_{4}.5{H}_{2}O$, ligands coordinating with $\mathrm{Cu}(\mathrm{II})$ ion are $O$-and $S$-based ligands. In the light of the above statements, choose the correct answer from the options given below
Octahedral complexes of copper $(\mathrm{II})$ undergo structural distortion (Jahn-Teller). Which one of the given copper $(\mathrm{II})$ complexes will show the maximum structural distortion? (en-ethylenediamine; ${H}_{2}N-{\mathrm{CH}}_{2}-{\mathrm{CH}}_{2}-{\mathrm{NH}}_{2}$)
Consider the following sulphure based oxoacids. ${H}_{2}{\mathrm{SO}}_{3},{H}_{2}{\mathrm{SO}}_{4},{H}_{2}{S}_{2}{O}_{8}$ and ${H}_{2}{S}_{2}{O}_{7}$. Amongst these oxoacids, the number of those with peroxo $(O-O)$bond is
Match List-I with List-II <table class="pyq-table"><tbody><tr><td></td><td>List-I (Complex)</td><td></td><td>List-II (Hybridization)</td></tr><tr><td>A</td><td>$\mathrm{Ni}{(\mathrm{CO})}_{4}$</td><td>I</td><td>${\mathrm{sp}}^{3}$</td></tr><tr><td>B</td><td>${[\mathrm{Ni}{(\mathrm{CN})}_{4}]}^{2-}$</td><td>II</td><td>${\mathrm{sp}}^{3}{d}^{2}$</td></tr><tr><td>C</td><td>${[\mathrm{Co}{(\mathrm{CN})}_{6}]}^{3-}$</td><td>III</td><td>${d}^{2}{\mathrm{sp}}^{3}$</td></tr><tr><td>D</td><td>${[{\mathrm{CoF}}_{6}]}^{3-}$</td><td>IV</td><td>${\mathrm{dsp}}^{2}$</td></tr></tbody></table>Choose the correct answer from the options given below
The first ionization enthalpies of $\mathrm{Be},B,N$ and $O$ follow the order
The first ionization enthalpy of $\mathrm{Na},\mathrm{Mg}$ and $\mathrm{Si}$, respectively, are: $496,737$ and $786\mathrm{kJ}{\mathrm{mo}1}^{-1}$. The first ionization enthalpy $({\mathrm{kJmol}}^{-1})$ of $\mathrm{Al}$ is
Which statement is not true with respect to nitrate ion test?
Heating white phosphorus with conc. $\mathrm{NaOH}$ solution gives mainly
The hybridization of central atom in SF₆ is:
Which of the following oxoacids of sulphur contains "S" in two different oxidation states?
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
Which of the following $3d-\mathrm{metal}$ ion will give the lowest enthalpy of hydration $({\Delta }_{\mathrm{hyd}}H)$ when dissolved in water?
Among the following species ${N}_{2},{N}_{2}^{+},{N}_{2}^{-},{N}_{2}^{2-},{O}_{2},{O}_{2}^{+},{O}_{2}^{-},{O}_{2}^{2-}$ the number of species showing diamagnetism is
According to $\mathrm{MO}$ theory, number of species/ions from the following having identical bond order is____ ${\mathrm{CN}}^{-},{\mathrm{NO}}^{+},{O}_{2},{O}_{2}^{+},{O}_{2}^{2+}$
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
Which one of the lanthanoids given below is the most stable in divalent form?
Metals generally melt at very high temperatures, Among the following which one has the highest melting point?
${[\mathrm{Fe}{(\mathrm{CN})}_{6}]}^{4-}$ ${[\mathrm{Fe}{(\mathrm{CN})}_{6}]}^{3-}$ ${[\mathrm{Ti}{(\mathrm{CN})}_{6}]}^{3-}$ ${[\mathrm{Ni}{(\mathrm{CN})}_{4}]}^{2-}$ ${[\mathrm{Co}{(\mathrm{CN})}_{6}]}^{3-}$ Among the given complexes, number of paramagnetic complexes is