AIPMT 2011 Preliminary Mock Test

Name the type of the structure of silicate in which one oxygen atom of $[{\text{SiO}}_4{]}^{4-}$ is shared?

The complexes $[\text{Co}({\text{NH}}_3{)}_6][\text{Cr}(\text{CN}{)}_6]$ and $[\text{Cr}({\text{NH}}_3{)}_6][\text{Co}(\text{CN}{)}_6]$ are the examples of which type of isomerism?

The $d$ -electron configurations of ${\text{Cr}}^{2+},{\text{Mn}}^{2+},{\text{Fe}}^{2+}$ and ${\text{Co}}^{2+}$ are $d^4,d^5,d^6$ and $d^7$ respectively. Which one of the following will exhibit minimum paramagnetic behaviour?

Of the following complex ions, which is diamagnetic in nature?

Which of the following has the minimum bond length?