Any type of chromatography shares which of the following characteristic?

1. Use of molecules that are soluble in water.

2. Use of inert carrier gas.

3. Calculation of R_f value for the molecule separated.

4. Use of a mobile and a stationary phase.

The number of σ and π bonds in the molecule $C_6{H}_6$ are -

The number of σ and π bonds in the molecule $C_6{H}_{12}$ are-

1. 7 = (${\sigma }_{C-C})$ , 11 =  $\left({\sigma }_{C-H}\right)$, and 0= π 

2. 6 = (${\sigma }_{C-C})$ , 12 =  $\left({\sigma }_{C-H}\right)$, and 0= π 

3. 12 = (${\sigma }_{C-C})$ , 6 =  $\left({\sigma }_{C-H}\right)$, and 1= π 

4. 5 = (${\sigma }_{C-C})$ , 13 =  $\left({\sigma }_{C-H}\right)$, and 1= π 

The correct IUPAC name is -

1. 2,2-Dimethylpentane 

2. 2-Dimethylpentane

3. 1-Dimethylpentane

4. 2,2-Dimethylethane

The correct IUPAC name of the following structure is

1. 2,4,7-Trimethyloctane

2. 2,5,7-Trimethyloctane

3. 2,3,7-Trimethyloctane

4. All of the above

The  IUPAC name of the following molecule is -

1. 2-Chloro-4-methylpentane

2. 4-Chloro-2-methylpentane

3. 4-Chloro-4-methylpentane

4. 2-Chloro-2-methylpentane

$\stackrel{1}{C}{H}_2$ $=\stackrel{2}{C}=O$

The correct hybridization states of carbon atoms in the above compound are - 

The correct hybridization states of carbon atoms marked as 1,2,3 in the following compound are -$\stackrel{1}{\mathrm{ \; C}}{H}_3-\stackrel{}{C}$ $2H=\stackrel{3}{C}{H}_2$

$O$
$\left|\right|$
$\underset{1}{C}{H}_3—\underset{2}{C}—\underset{3}{C}{H}_3$

The correct hybridization  of carbon atoms are-

1. C₁= sp , C₂= sp³ , C₂= sp²

2. C₁= sp² , C₂= sp³ , C₂= sp³

3. C₁= sp³ , C₂= sp² , C₂= sp³

4. C₁= sp³ , C₂= sp³ , C₂= sp³

The correct hybridization states of carbon atoms in the following compound are - $\stackrel{1}{\mathrm{ \; \; C}}{H}_2=\stackrel{2}{C}H-\stackrel{3}{C}\equiv N$