An aqueous solution of titanium chloride, when subjected to magnetic measurement, show zero magnetic moment. The formula of complex in aqueous solution is

• [Ti(H₂O)₆]Cl₄

• [Ti(H₂O)₆]Cl₃

• [Ti(H₂O)₅Cl]Cl₂

• [Ti(H₂O)₆]Cl

Among [Fe(H₂O)₆]⁺, [Fe(CN)₆]^3-, [Fe(Cl)₆]^3- species, the hybridisation state of the Fe atom are, respectively.

• d²sp³, d²sp³, sp³d²

• sp³d²,d²sp³, d²sp³

• sp³d², d²sp³,sp³d²

• None of the above

Which of the following ligands is tetradentate?

Some of the properties of the two species, ${\mathrm{NO}}_3^{-} \mathrm{and} {\mathrm{H}}_3{\mathrm{O}}^{+}$ are described below. Which one of them is correct?

• Dissimilar in hybridisation for the central atom with different structures

• Isostructural with same hybridisation for the central atom

• Isostructural with different hybridisation for the central atom

• Similar in hybridisation for the central atom with different structures

Which of the following structures is the most preferred and hence of lowest energy for SO₃?

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

• ${\mathrm{O}}_2^{-}, {\mathrm{O}}_2^{2-}$ - Both diamagnetic 

• ${\mathrm{O}}^{+}, {\mathrm{O}}_2^{2-}$ - Both diamagnetic 

• ${\mathrm{O}}_2^{+}, {\mathrm{O}}_2$ - Both diamagnetic 

• $\mathrm{O}, {\mathrm{O}}_2^{2-}$ - Both diamagnetic 

Which of the following is correct comparison of the stability of the molecules?

• $\mathrm{CN} < {\mathrm{O}}_2^{+}$

• CN = N₂

• N₂ < O₂

• ${\mathrm{H}}_2^{+} > {\mathrm{He}}_2^{+}$

Dipole moment of HCl = 1.03 D, HI = 0.38 D. Bond length of HCl = 1.3 $\stackrel{°}{\mathrm{A}}$ and HI= 1.6 $\stackrel{°}{\mathrm{{\rm A}}}$.  The ratio of fraction of electric charge, $\mathrm{\delta }$, existing on each atom in HCl and HI is

• 12: 1

• 2.7: 1

• 3.3: 1

• 1: 3.3

339.

SiCl₄ on hydrolysis forms 'X' and HCl Compound 'X' loses water at l000°C and gives 'Y'. Compounds 'X' and 'Y' respectively are

• H₂SiCl₆, SiO₂

• H₄SiO₄, Si

• SiO₂, Si

• H₄SiO₄, SiO₂

In TeCl₄ the central atom tellurium involves :

• sp³ hybridisation 

• sp³d hybridisation 

• sp³d² hybridisation 

• dsp² hybridisation