Inorganic Chemistry PYQ — Page 57

The structure of $\mathrm{IF}_7$ is :

Which one of the following order represents the correct sequence of the increasing basic nature of the given oxides ?

Which of the following facts about the complex $\left[\mathrm{Cr}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_3$ s wrong ?

Among the following the maximum covalent character is shown by the compound:

Which of the following statement is wrong?

Boron cannot form which one of the following anions?

Which of the following statements regarding sulphur is incorrect?

In context of the lanthanoids, which of the following statements is not correct ?

The outer electron configuration of Gd (Atomic No : 64 is :

Which one of the following has an optical isomer ? (en = ethylenediamine)

A solution containing $2.675 \mathrm{~g}$ of $\mathrm{CoCl}_3 .6 \mathrm{NH}_3$ (molar mass $=267.5 \mathrm{~g} \mathrm{~mol}^{-1}$ ) is passed through a cation exchanger. The chloride ions obtained in solution were treated with excess of $\mathrm{AgNO}_3$ to give $4.78 \mathrm{~g}$ of $\mathrm{AgCl}$ (molar mass $=143.5 \mathrm{~g} \mathrm{~mol}^{-1}$ ). The formula of the complex is (At. Mass of $\mathrm{Ag}=108 \mathrm{u}$ )

Three reactions involving $\mathrm{H}_2 \mathrm{PO}_4^{-}$are given below : (i) $\mathrm{H}_3 \mathrm{PO}_4+\mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{H}_3 \mathrm{O}^{+}+\mathrm{H}_2 \mathrm{PO}_4^{-}$ (ii) $\mathrm{H}_2 \mathrm{PO}_4^{-}+\mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{HPO}_4^{2-}+\mathrm{H}_3 \mathrm{O}^{+}$ (iii) $\mathrm{H}_2 \mathrm{PO}_4^{-}+\mathrm{OH}^{-} \rightarrow \mathrm{H}_3 \mathrm{PO}_4+\mathrm{O}^{2-}$ In which of the above does $\mathrm{H}_2 \mathrm{PO}_4^{-}$act as an acid ?

Which one of the following reactions of Xenon compounds is not feasible ?

Which of the following pairs represents linkage isomers ?

In which of the following arrangements, the sequence is not strictly according to the property written against it ?

The bond dissociation energy of $\mathrm{B}-\mathrm{F}$ in $\mathrm{BF}_3$ is $646 \mathrm{~kJ}$ mol ${ }^{-1}$ whereas that of $\mathrm{C}-\mathrm{F}$ in $\mathrm{CF}_4$ is $515 \mathrm{~kJ}$ mol $^{-1}$. The correct reason for higher B-F bond dissociation energy as compared to that of $C$ - $F$ is :

Which of the following has an optical isomer ?

In context with the transition elements, which of the following statements is incorrect?

Knowing that the Chemistry of lanthanoids $(\operatorname{Ln})$ is dominated by its $+3$ oxidation state, which of the following statements in incorrect?

Using MO theory predict which of the following species has the shortest bond length ?

The set representing the correct order of ionic radius is :

Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being

The coordination number and the oxidation state of the element ' $\mathrm{E}$ ' in the complex $\left[\mathrm{E}(\mathrm{en})_2\left(\mathrm{C}_2 \mathrm{O}_4\right)\right] \mathrm{NO}_2$ (where (en) is ethylene diamine) are, respectively,

Which one of the following pairs of species have the same bond order?