Amongst NO${}_3^{-}, {\mathrm{AsO}}_3^{3-}, {\mathrm{CO}}_3^{2-}, {\mathrm{ClO}}_3^{-}, {\mathrm{SO}}_3^{2-} \mathrm{and} {\mathrm{BO}}_3^{3-}$, the non -planar species are

• ${\mathrm{NO}}_3^{-}, {\mathrm{CO}}_3^{2-} \mathrm{and} {\mathrm{BO}}_3^{3-}$

• ${\mathrm{ClO}}_3^{-}, {\mathrm{SO}}_3^{2-} \mathrm{and} {\mathrm{BO}}_3^{3-}$

• ${\mathrm{CO}}_3^{2-}, {\mathrm{SO}}_3^{2-} \mathrm{and} {\mathrm{BO}}_3^{3-}$

• ${\mathrm{AsO}}_3^{3-}, {\mathrm{CO}}_3^{2-}\mathrm{and} {\mathrm{SO}}_3^{2-}$

Intramolecular hydrogen bond is present in

• water

• o-nitrophenol

• p-nitrophenol

• methylamine

The molecule C₃O₂ linear structure. This compound has

• 2σ and 3π bonds

• 3σ and 4π bonds

• 4σ and 4π bonds

• 3σ and 2π bonds

The structure of XeF₂ and NH₃ respectively are

• linear, see-saw

• bent, see-saw

• bent, tetrahedral

• linear, pyramidal

Which one of the following has (have) octahedral geometry?

(i) SbCl${}_6^{-}$

(ii) SnCl${}_6^{2-}$

(iii) XeF₆

(iv) IO${}_6^{5-}$

• (i), (ii) and (iv)

• (ii), (iii) and (iv)

• (i), (ii) and (iii)

• All of these

Among the following compounds of boron, the species which also forms $\mathrm{\pi }$-bond in addition to σ-bonds is

• BH₃

• B₂H₆

• BF₃

• BF${}_4^{-}$

Number of bonding electron pairs and number of lone pairs of electrons in ClF₃, SF₄, BrF₅ respectively are

• 3, 2, 4, 2, 5, 2

• 3, 1, 4, 1,5, 2

• 3, 1, 4, 2, 5, 1

• 3, 2, 4, 1, 5, 1

What is the bond order of N₂ ?

• 3

• 4

• 2

• 1

Match the following

• (a)    (b)  (c)  (d)
  (iv)   (ii)   (i)    (iii)

• (a)    (b)   (c)    (d)
  (iii)   (v)   (ii)    (iv)

• (a)  (b)    (c)   (d)
  (iii)   (v)   (ii)   (i)

• (a)   (b)   (c)    (d)
  (iii)   (v)   (ii)   (v)

370.

The hybridisation of each carbon in the following compound respectively is CH₃-CO-CH₂CN

• sp³,sp²,sp³,sp

• sp³,sp³,sp²,sp

• sp³,sp²,sp, sp³

• sp²,sp, sp³, sp³