Which of the following carbocations is the most stable?

1.		2.	\(\mathrm{(CH}_3){ }_3 \stackrel{\oplus}{\mathrm{C}}\)
3.	\(\mathrm{CH}_2=\mathrm{CH}-\stackrel{\oplus}{\mathrm{C}\mathrm{H}_2}\)	4.	\(\left(\mathrm{CH}_3\right)_2 \stackrel{\oplus}{\mathrm{C H}}\)

Which hydrocarbon is most acidic ?

How many chiral centers are present in 3,4-dibromo-2-pentanol?

1. 1

2. 2

3. 3

4. 4

Which of the following compounds is an isomer of 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

The aromatic compound among the following is :

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 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

Consider the following resonating structures of HCOOH

The order of stability is-

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