With respect to the conformers of ethane, which of the following statements is true?

• Bond angle remains same but bond length changes

• Bond angle changes but bond length remains same

• Both bond angle and bond length change

• Both bond angle and bond length change

692.

Which of the following pairs of compounds is isoelectronic and isostructural?

• BeCl₂, XeF₂

• Tel₂, XeF₂

• IBr₂^- , XeF 

• IBr₂^- , XeF 

Match the interhalogen compounds of column I with the geometry in column II and assign the correct code

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

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

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

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

Which of the following is least soluble in water?

• C₂H₆

• CH₃OH

• CH₃NH₂

• C₆H₅OH

Among the following compounds, which compound is polar as well as exhibit sp²-hybridisation by the central atom.

• H₂CO₃

• SiF₄

• BF₄

• HClO₃

Choose the correct statement from the following

• ${\mathrm{NH}}_4^{+}$ and CH₄ are not isoelectronic species

• BF₃ does not have dipole moment

• O - Cl - O obeys octet rule

• O^- in O₃ is Sp³-hybridised

Which of the following pair of compounds will have three sp² -hybrid orbitals?

• SO₂, CH₄

• SO₃, C₂H₄

• BF₃, SF₃

• ${\mathrm{I}}_3^{-}$, SF₄

Consider the following structures

Choose the correct statement regarding the above structures.

• Dipole moment varies as II > III > I

• II is more stable than I

• I is the most reactive among three

• All of the above

The correct order of magnitude of bond angles among the compounds CH₄, NH₃ and H₂O is

• CH₄ > H₂O < NH₃

• H₂O < NH₃ < CH₄

• NH₃ < CH₄ < H₂O

• NH₃ < H₂O < CH₄

The angular shape of ozone molecule (O₃) consists of

• 1 sigma and 2 pi bonds

• 2 sigma and 2 pi bonds

• 1 sigma and 1 pi bonds

• 2 sigma and 1 pi bonds