Paper chromatography is an example of:

1. Partition chromatography

2. Thin layer chromatography

3. Column chromatography

4. Adsorption chromatography

A tertiary butyl carbocation is more stable than a secondary butyl carbocation because-

1. + R effect of ${CH}_3$ groups 

2. $-$R effect of $-$ CH₃  groups 

3. Hyperconjugation 

4. $-$l effect of $-$CH₃ groups 

A liquid compound (x) can be purified by steam distillation only if it is:

1. Steam volatile, immiscible with water 

2. Not steam volatile, miscible with water

3. Steam volatile, miscible with water

4. Not steam volatile, immiscible with water

The most stable carbocation among the following is:

1.		2.
3.		4.

The IUPAC name of  CH₃CH=CHC≡CH is:

1. Pent - 3 - en - 1 - yne

2. Pent - 2 - en - 4 - yne

3. Pent - 1 - yn - 3 - ene

4. Pent - 4 - yn - 2 – ene

The species among the following that is not an electrophile is:

1. $B{H}_3$

2. $H_3\stackrel{\oplus }{O}$

3. $\stackrel{\oplus }{N}{O}_2$

4. $\stackrel{\oplus }{Cl}$

The IUPAC name of the above-mentioned compound is:

1. cis-2-Chloro-3-iodo-2-pentene
2. trans-2-Chloro-3-iodo-2-pentene
3. cis-3-Iodo-4-chloro-3-pentene
4. trans-3-Iodo-4-chloro-3-pentene

Polarisation of electrons in acrolein may be written as:

1.  $\stackrel{+\delta }{C}{H}_2=CH-\stackrel{-\delta }{C}HO$

2.  $\stackrel{-\delta }{C}{H}_2=CH-\stackrel{+\delta }{C}HO$

3.  $\stackrel{-\delta }{C}{H}_2=CH-\stackrel{}{C}\stackrel{+\delta }{H}O$

4.  $\stackrel{+\delta }{C}{H}_2=CH-CH\stackrel{-\delta }{O}$

The correct order of –I effect is:

The correct order of stability is: