Problem 1
Which one of the following molecules will form a linear polymeric structure due to hydrogen bonding? (a) \(\mathrm{NH}_{3}\) (b) \(\mathrm{H}_{2} \mathrm{O}\) (c) \(\mathrm{HCl}\) (d) HF
Problem 2
Among the following the electron deficient compound is (a) \(\mathrm{BCl}_{3}\) (b) \(\mathrm{CCl}_{4}\) (c) \(\mathrm{PCl}_{5}\) (d) \(\mathrm{CH}_{4}\)
Problem 3
Among the following ions the \(\mathrm{p} \pi-\mathrm{d} \pi\) overlap could be present in (a) \(\mathrm{NO}_{2}^{-}\) (b) \(\mathrm{NO}^{-}=\) (c) \(\mathrm{PO}_{4}^{3-}\) (d) \(\mathrm{CO}_{3}^{2}\)
Problem 4
Which one of the following is not paramagnetic? (a) \(\mathrm{NO}\) (b) \(\mathrm{N}_{2}^{+}\) (c) \(\mathrm{CO}\) (d) \(\mathrm{O}_{2}^{-}\)
Problem 5
Cation and anion combines in a crystal to form following type of compound. (a) ionic (b) metallic (c) covalent (d) dipole-dipole
Problem 6
Which of the following two are isostructural? (a) \(\mathrm{XeF}_{2}, \mathrm{IF}_{2}^{-}\) (b) \(\mathrm{NH}_{3}, \mathrm{BF}_{3}\) (c) \(\mathrm{CO}_{3}^{2-}, \mathrm{SO}_{3}^{2-}\) (d) \(\mathrm{PCl}_{5}, \mathrm{ICl}_{5}\)
Problem 7
Main axis of a diatomic molecule is z, molecule orbitals \(\mathrm{p}_{x}\) and \(\mathrm{p}_{\mathrm{y}}\) overlap to form, which of the following orbital? (a) \(\pi\) molecular orbital (b) \(\sigma\) molecular orbital (c) \(\delta\) molecular orbital (d) no bond will form
Problem 8
In which of the following compounds will the bond angle be maximum? (a) \(\mathrm{NH}_{3}\) (b) \(\mathrm{NH}_{4}^{+}\) (c) \(\mathrm{PCl}_{3}\) (d) \(\mathrm{SCl}_{2}\)
Problem 9
Which of the following has \(\mathrm{p} \pi-\mathrm{d} \pi\) bonding? (a) \(\mathrm{NO}_{3}^{-}\) (b) \(\mathrm{SO}_{3}^{2-}\) (c) \(\mathrm{BO}_{3}^{3-}\) (d) \(\mathrm{CO}_{3}^{2-}\)
Problem 10
In \(\mathrm{NO}_{3}^{-}\)ion, number of bond pair and lone pair of electron on nitrogen atom are? (a) 2,2 (b) 3,1 (c) 1,3 (d) 4,0
