NEET UG 2008 — Inorganic Chemistry

Acetophenone when reacted with a base, $\mathrm{C}_2 \mathrm{H}_5 \mathrm{ONa}$, yields a stable compound which has the structure

Four diatomic species are listed below the different sequences. Which of these presents the correct order of their increasing bond order?

In the hydrocarbon  The state of hybridisation of carbons 1,3 and 5 are in the following sequence

In the hydrocarbon $$ \underset{8}{\mathrm{CH}_3}-\mathrm{CH}=\underset{4}{\mathrm{CH}}=\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{C} \equiv \mathrm{CH}_1 $$ The state of hybridization of carbons 1,3 and 5 are in the following sequence

In which of the following coordination entities the magnitude of $\Delta \mathrm{O}$ (CFSE in octahedral field) will be maximum (at. no. $\mathrm{Co}=27$ )?

In which of the following coordination entities the magnitude of $\Delta_o$ (CFSE in octahedral field) will be maximum? (Atomic number $\mathrm{Co}=27$ )

The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?

The angular shape of molecule $\left(\mathrm{O}_3\right)$ consists of

The correct order of decreasing second ionisation enthalpy of Ti (22), V (23), Cr (24) and $\mathrm{Mn}(25)$ is

The correct order of decreasing second ionisation enthalpy of Ti(22), V (23), Cr (24) and $\mathrm{Mn}(25)$ is

The correct order of increasing bond angles in the following triatomic species is

The value of equilibrium constant of the reaction $\mathrm{HI}(g) \rightleftharpoons \frac{1}{2} \mathrm{H}_2(g)+\frac{1}{2} \mathrm{I}_2$ is 8.0 The equilibrium constant of the reaction $\mathrm{H}_2(g)+\mathrm{I}_2(g) \rightleftharpoons 2 \mathrm{HI}(g)$ will be

Volume occupied by one molecule of water (density $=1 \mathrm{~g} \mathrm{~cm}^{-3}$ ) is

Which of the following complexes exhibits the highest paramagnetic behaviour? Where gly = glycine, en = ethylenediamine and bpy = bipyridyl moities). (At. number $\mathrm{Ti}$ $=22, \mathrm{~V}=23, \mathrm{Fe}=26, \mathrm{Co}=27$ )

Which one of the following arrangements does not give the correct picture of the trends indicated against it?

Which one of the following arrangements does not give the correct picture of the trends indicated against it?

With which one of the following elements silicon should be doped so as to give ptype of semiconductor?