Which of the following molecules has no dipole moment?

1.  ${\mathrm{CH}}_3\mathrm{Cl}$

2.  ${\mathrm{CHCl}}_3$

3.  ${\mathrm{CH}}_2{\mathrm{Cl}}_2$

4.  ${\mathrm{CCl}}_4$

The element which readily forms an ionic bond has the electronic configuration

1. $1s^{2}2s^{2}2p^3$

2. $1s^{2}2s^{2}2p^1$

3. $1s^{2}2s^{2}2p^2$

4.$1s^{2}2s^{2}2p^{6}3s^1$

The order of electronegativity of carbon in sp, ${\mathrm{sp}}^2 \mathrm{and} {\mathrm{sp}}^3$ hybridized states follows:

1. $\mathrm{sp}>{\mathrm{sp}}^2>{\mathrm{sp}}^3$

2. ${\mathrm{sp}}^3>{\mathrm{sp}}^2>\mathrm{sp}$

3. $\mathrm{sp}>{\mathrm{sp}}^3>{\mathrm{sp}}^2$

4. ${\mathrm{sp}}^2>\mathrm{sp}>{\mathrm{sp}}^3$

The diamagnetic species among the following is:

1. NO

2. ${\mathrm{NO}}_2$

3. ${\mathrm{O}}_2$

4. ${\mathrm{CO}}_2$

Among the following atomic orbital overlaps, the non-bonding overlap is:
 

1.		2.
3.		4.

The correct structure of $PC{l}_3{F}_2$ is

1. 

2. 

3. 

4.   

The compounds containing sp hybridized carbon atoms are: 

i.		ii.
iii.	${\mathrm{H}}_3\mathrm{C}-\mathrm{CN}$	iv.	${\mathrm{H}}_2\mathrm{C}=\mathrm{C}={\mathrm{CHCH}}_3$

1. i and ii

2. iii and iv

3. ii and iii

4. i and iv

The hybridization of the central atom and the shape of ${\left[{\mathrm{lO}}_2{\mathrm{F}}_5\right]}^{2-}$ ion, respectively, are

1.  $s{p}^3{d}^3$

2.  $s{p}^2{d}^4$

3.  $s{p}^2{d}^4$

4.  $s{p}^3{d}^3$

Which of the following contain a maximum number of electrons in the antibonding molecular orbitals?

1.  ${O_2}^{2-}$

2.  $O_2$

3.  ${O_2}^{-}$

4.  ${O_2}^{+}$

Which of the following compounds has the least tendency to form hydrogen bonds between molecules?

1.  ${\mathrm{NH}}_3$

2.  ${\mathrm{H}}_2\mathrm{NOH}$

3.  HF

4.  ${\mathrm{CH}}_3\mathrm{F}$