Among the following molecules/ions BF₃, NO₂^-, NH₂^- , and H₂O, the central atom is sp² hybridized in :  

1. NO₂^- and NH₂^-

2. NH₂^-  and H₂O

3. NO₂^- and H₂O

4. BF₃ and NO₂^-

The correct order of the increasing bond angles in the following triatomic species is :  

Compound that does not exhibit hydrogen bonding is-

1.	CH3CH2OH	2.
3.		4.

Which is the least polarizable gas among the following?

Correct statement among the following regarding the shape of  HgCl₂, SnCl₂ and F₂O is:

In BrF₃ molecule, the lone pairs occupy equatorial positions to minimize:

The correct order of the dipole moment of the following molecules is : 

Which of the following molecules exhibits H-bonding?

Compound that is isoelectronic with an adduct of "Diborane and Ammonia" is-

1. Hydrogen peroxide.

2. Diborane (at absolute zero temp.).

3. First member of alkyne series.

4. Diborane (at 10$°$C temp).

The correct order of H-bond strength in the following compounds is:

1. H₂O > H₂O₂ > HF > H₂S

2. HF >  H₂O₂ > H₂O > H₂S

3. HF > H₂O > H₂S > H₂O₂

4. HF > H₂O > H₂O₂ > H₂S