NEET UG 2011 — Inorganic Chemistry

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

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

The complex, $\left[\mathrm{Pt}(\mathrm{Py})\left(\mathrm{NH}_3\right) \mathrm{BrCl}\right]$ will have how many geometrical isomers?

The correct order of increasing bond length of $\mathrm{C}-\mathrm{H}, \mathrm{C}-\mathrm{O}, \mathrm{C}-\mathrm{C}$ and $\mathrm{C}=\mathrm{C}$ is

The d-electron configurations of $\mathrm{Cr}^{2+}, \mathrm{Mn}^{2+}$, $\mathrm{Fe}^{2+}$ and $\mathrm{Co}^{2+}$ are $d^4, d^5, d^6$ and $d^7$ respectively. Which one of the following will exhibit minimum paramagnetic behaviour? (At. no. $\mathrm{Cr}=24, \mathrm{Mn}=25, \mathrm{Fe}=26, \mathrm{Co}=27$ )

The pairs of species of oxygen and their magnetic behaviours are noted below. Which of the following presents the correct description?

What is the value of electron gain enthalpy of $\mathrm{Na}^{+}$if $\mathrm{IE}_1$ of $\mathrm{Na}=5.1 \mathrm{eV}$ ?

Which of the following carbonyls will have the strongest $\mathrm{C}-\mathrm{O}$ bond?

Which of the following complex compounds will exhibit highest paramagnetic behaviour? (At. no. : $\mathrm{Ti}=22, \mathrm{Cr}=24$, $\mathrm{Co}=27, \mathrm{Zn}=30$ )

Which of the following compounds has the lowest melting point?

Which of the following elements is present as the impurity to the maximum extent in the pig iron?

Which of the following has the minimum bond length?

Which of the following oxide is amphoteric?

Which of the following pairs of metals is purified by van Arkel method?

Which of the following statements is incorrect?

Which of the following structures is the most preferred and hence of lowest energy for $\mathrm{SO}_3$ ?

Which of the two ions from the list given below, have the geometry that is explained by the same hybridisation of orbitals, $\mathrm{NO}_2^{-}, \mathrm{NO}_3^{-}, \mathrm{NH}_2^{-}, \mathrm{NH}_4^{+}, \mathrm{SCN}^{-}$?