Related InterviewSolutions

• Which of the following lanthanoid ions is diamagnetic? (Atomic number of `Ce=58,Sm=62,Eu=63,Yb=70`]A. `Ce^(2+)`B. `Sm^(2+)`C. `Eu^(2+)`D. `Yb^(2+)`
• Lanthanides areA. 14 elements in the sixth period (At.no=90 to 103) that are filling 4f sub-levelB. 14 elements in the seventh period (At.no.=90 to 103) that are filling 5f sub-levelC. 14 elements in the sixth period (At.no.=58 to 171) that are filling 4f sub-level).D. 14 elements in the seventh period (At. No.=58 to 71) that are filling 4f sub-level
• The common oxidation states of Ti areA. `+2, +3`B. `+3, +4`C. `3,-4`D. `+2,+3,+4`
• Photographic plates and films have an essential ingredient ofA. silver nitrateB. silver bromideC. sodium chlorideD. oleic acid
• The oxidation state of `Cr` in `K_(2)Cr_(2)O_(7)` is:A. `+5`B. `+3`C. `+6`D. `+7`
• Which of the following elements shows maximum number of different oxidation states in its compounds ?A. EuB. LaC. GdD. Am
• `CuSO_(4)` when reacts with KCN forms `CuCN` which is insoluble in water. It is soluble in excess of KCN due to the formation of the complex.A. `K_(3)[Cu(CN)_(4)]`B. `K_(3)[Cu(CN)_(4))]`C. `Cu(CN)_(2)`D. `Cu[Kcu(CN)_(4)]`
• Which of the following may be considered to be an organometallic compound?A. Nickel tetracarbonylB. ChlorophyllC. `K_(3)[Fe(C_(2)O_(4))_(3)]`D. `[Co(en)_(3)Cl_(3)]`
• Stainaless steel contains iron andA. `Cr + Ni`B. `Cr+ Zn`C. `Zn+Pb`D. `Fe+Cr+Ni`
• Cuprous compounds such as CuCI, CuCN and CuSCN are the only salts stable in water due toA. high hydration energy of `Cu^(+)` ionsB. their inherit tendency not to disproportionateC. diamagnetic natureD. insolubility in water.