The most stable carbocation among the following is:

1.		2.
3.		4.

Decreasing order of acidic character for cyclohexanol (I), acetic acid (II), 2, 4, 6-trinitrophenol (III) and phenol (IV),  will be

1. III>II>IV>I

2. II>III>I>IV

3. II>III>IV>I

4. III>IV>II>I

The hybridised state of C in $\stackrel{\oplus }{\mathrm{C}}{H}_5$ is 

1. $\mathrm{sp}$

2. ${\mathrm{sp}}^2$

3. ${\mathrm{sp}}^3$

4. ${\mathrm{sp}}^3\mathrm{d}$

Which alkene has smallest heat of hydrogenation ?

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