91Ó°ÊÓ

Type of isomerism which exists between \(\left[\mathrm{Pd}\left(\mathrm{C}_{6} \mathrm{H}_{5}\right)_{2}(\mathrm{SCN})_{2}\right]\) and \(\left[\mathrm{Pd}\left(\mathrm{C}_{6} \mathrm{H}_{5}\right)_{2}(\mathrm{NCS})_{2}\right]\) is : (a) Linkage isomerism (b) Coordination isomerism (c) Ionisation isomerism (d) Solvate isomerism

The pair having the same magnetic moment is: [At. No.: \(\mathrm{Cr}=24, \mathrm{Mn}=25, \mathrm{Fe}=26, \mathrm{Co}=27]\) (a) \(\left[\mathrm{Mn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) (b) \(\left[\mathrm{CoCl}_{4}\right]^{2-}\) and \(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) (c) \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and \(\left[\mathrm{CoCl}_{4}\right]^{2-}\) (d) \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and \(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)

The geometries of the ammonia complexes of \(\mathrm{Ni}^{2+}, \mathrm{Pt}^{2+}\) and \(\mathrm{Zn}^{2+}\) respectively, are (a) octahedral, square planar and tetrahedral (b) square planar, octahedral and tetrahedral (c) tetrahedral, square planar and octahedral (d) octahedral, tetrahedral and square planar

As per IUPAC nomenclature, the name of the complex \(\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4}\left(\mathrm{NH}_{3}\right)_{2}\right] \mathrm{Cl}_{3}\) is : (a) Tetraaquadiaminecobalt (III) chloride (b) Tetraaquadiamminecobalt (III) chloride (c) Diaminetetraaquacoblat (II) chloride (d) Diamminetetraaquacobalt (III) chloride

Which of the following compounds is not colored yellow? (a) \(\left(\mathrm{NH}_{4}\right)_{3}\left[\mathrm{As}\left(\mathrm{Mo}_{3} \mathrm{O}_{10}\right)_{4}\right]\) (b) \(\mathrm{BaCrO}_{4}\) (c) \(\mathrm{Zn}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\) (d) \(\mathrm{K}_{3}\left[\mathrm{Co}\left(\mathrm{NO}_{2}\right)_{6}\right]\)

The color of \(\mathrm{KMnO}_{4}\) is due to : (a) \(\mathrm{L} \rightarrow \mathrm{M}\) charge transfer transition (b) \(\sigma-\sigma^{*}\) transition (c) \(\mathrm{M} \rightarrow \mathrm{L}\) charge transfer transition (d) \(\mathrm{d}-\mathrm{d}\) transition

The ionisation isomer of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4} \mathrm{Cl}\left(\mathrm{NO}_{2}\right)\right] \mathrm{Cl}\) is (a) \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4}\left(\mathrm{O}_{2} \mathrm{~N}\right)\right] \mathrm{Cl}_{2}\) (b) \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4} \mathrm{Cl}_{2}\right]\left(\mathrm{NO}_{2}\right)\) (c) \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4} \mathrm{Cl}(\mathrm{ONO})\right] \mathrm{Cl}\) (d) \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4} \mathrm{Cl}_{2}\left(\mathrm{NO}_{2}\right)\right] \cdot \mathrm{H}_{2} \mathrm{O}\)

Which molecule/ion among the following cannot act as a ligand in complex compounds? (a) \(\mathrm{CH}_{4}\) (b) \(\mathrm{CO}\) (c) \(\mathrm{CN}^{-}\) (d) \(\mathrm{Br}^{-}\)

The IUPAC name of \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{4}\right]\left[\mathrm{NiCl}_{4}\right]\) is (a) Tetrachloronickel (II) - tetraamminenickel (II) (b) Tetraamminenickel (II) - tetrachloronickel (II) (c) Tetraamminenickel (II) - tetrachloronickelate (II) (d) Tetrachloronickel (II) - tetrachloronickelate (0) Ans. (C)

Which kind of isomerism is exhibited by octahedral \(\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Br}_{2} \mathrm{Cl} ?\) (a) Geometrical and Ionization (b) Geometrical and Optical (c) Optical and Ionization (d) Geometrical only