Match List-I with List-II and choose the correct matching codes from the choices given.

• A - 3; B - 5; C - 2; D - 1; E - 4

• A - 3; B - 5; C - 4; D - 1; E - 2

• A - 3; B - 5; C - 6; D - 1; E - 2

• A - 3; B - 5; C - 2; D - 6; E - 4

Among the following, the pair in which the two species are not isostructural are

• IO${}_3^{-}$ and XeO₃

• PF${}_6^{-}$ and SF₆

• BH${}_4^{-}$ and NH${}_4^{+}$

• CO${}_3^{2-}$ and NO${}_2^{-}$

Each B - H - B bridge in B₂H₆ is formed by the sharing of:

• 2 electrons

• 4 electrons

• 1 electron

• 3 electrons

Which of the following overlaps leads to bonding?

In which of the following compound sp² hybridisation is absent ?

• CH ≡ C - CH = CH₂

• CH ≡ C - CH₂ - CH₃

• CH₃ - CH = CH₂

• CH₂ = CH - CH₂ - CH₃

What is the hybridization state of the central atom in the conjugate base of NH${}_4^{+}$ ion?

• sp

• sp³

• sp²

• dsp²

If the bond length and dipole moment of a diatomic molecule are 1.25 A and 1.0 D respectively, what is the percent ionic character of the bond ?

• 10.66

• 12.33

• 16.66

• 19.33

18.

Which one of the following is a correct set ?

• H₂O, sp³, angular

• BCl₃, sp³, angular

• NH${}_4^{+}$, dsp², square planar

• CH₄, dsp², tetrahedral

Fluorine reacts with dilute NaOH and forms a gaseous product A. The bond angle in the molecule of A is

• 104°40'

• 103°

• 107°

• 109°28'

The number of p$\mathrm{\pi }$-d$\mathrm{\pi }$ 'pi' bonds present in XeO₃ and XeO₄ molecules, respectively are-

• 3, 4

• 4, 2

• 2, 3

• 3, 2