The correct order of abstraction of hydrogen toward homolytic fission is:

1. 2 > 4 > 3 > 5 > 1

2. 4 > 2 > 5 > 3 > 1

3. 4 > 2 > 3 > 5 > 1

4. 4 > 3 > 2 > 5 > 1

Consider the following resonating structures of HCOOH

The order of stability is-

The correct order of the rate of expulsion of hydrogen as ${\mathrm{H}}^{+}$ in the above figure is:

1. 1 > 2 > 3

2. 2 > 3 > 1

3. 2 > 1 > 3

4. 3 > 2 > 1

Which alkene is most stable ?

1. ${\mathrm{CH}}_2=\mathrm{CH}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

2. ${\left({\mathrm{CH}}_3\right)}_{3}C-CH=C{H}_2$

3. ${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_3$

4. ${\left({\mathrm{CH}}_3\right)}_{2}C=C{\left(C{H}_3\right)}_2$

The aromatic compound among the following is :

The most stable carbocation is 

1. 

2. ${\left({\mathrm{CH}}_3\right)}_3\stackrel{\oplus }{C}$

3. ${\mathrm{CH}}_2=\mathrm{CH}-\stackrel{\oplus }{\mathrm{C}}{\mathrm{H}}_2$

4. ${\left({\mathrm{CH}}_3\right)}_2\stackrel{\oplus }{C}H$

Which hydrocarbon is most acidic ?

The number of chiral centers present in 3,4-dibromo-2-pentanol is/are :

1. 1

2. 2

3. 3

4. 4

Which of the following compounds is isomeric with methyl vinyl ether?

1. Propanal

2. 1-propanol

3. Ethyl methyl ether

4. Dimethylether

The molecule among the following having the highest reactivity toward the SN¹ reaction is:

1. C₆H₅CH(C₆H₅)Br

2. C₆H₅CH(CH₃)Br

3. C₆H₅C(CH₃)(C₆H₅)Br

4. C₆H₅CH₂Br